This paper inquires into how the new techniques of 14th-century physics, especially the doctrines of the maxima and minima of powers and the latitudes of forms, were applied to the issue of propagation of light. The focus is on several Prague disputed questions, originating between 1377 and 1409, dealing with whether illumination has infinite or finite reach and whether illumination’s intensity remains constant (uniformis) or is rather uniformly decreasing (uniformiter difformis). These questions are contextualised through examination of Oxford, (...) Paris, and Prague sources of the era (John Dumbleton, John Buridan, Nicole Oresme, Albert of Saxony, Henry of Langenstein, John of Holland) to construct a fresh survey of late medieval theories of light. Along the way, the discovery of a hitherto unknown Prague disputation from the 1370s is announced, and new evidence for the dating and Central European dissemination of Jacobus de Sancto Martino’s De latitudinibus formarum and Nicole Oresme’s Questiones super Geometriam is uncovered. (shrink)

The somewhat deflating conclusion of Simon A. Gilson's meticulous examination of Dante's incorporation of the science of optics and theories of light is that the poet was considerably less well read than we have been giving him credit for.Gilson's book is divided into two parts: the first, dealing with the science of optics, contains four chapters; the second, dealing with theories of light, contains three. Each of these parts is devoted to debunking a tendency in Dante scholarship to (...) attribute to a particular scientific or philosophical movement a marked influence on his work. In the first part Gilson maintains that Dante's use of the science of optics does not—as others, most forcefully and influentially Alessandro Parronchi, have argued—rely specifically on knowledge of the authors of the perspectivae—detailed treatises on optics that placed the influence of light rays at the origin of terrestrial phenomena—that is, on such thinkers as Alhazen, Roger Bacon, and Robert Grosseteste. Rather, Gilson contends that Dante could easily have come by the requisite expertise concerning this science through contact with the more popular and widely known doctrines of such Arab interpreters of Aristotle as Avicenna and Averroës and the commentaries of Albert the Great and Thomas Aquinas. He demonstrates the plausibility of this contention by way of a comparative analysis of the doctrines of the perspectivists and the Arab interpreters. This analysis is followed by a chapter devoted to optics and vision in Dante's earlier poetry.The two following chapters cover, respectively, topics such as blinding, optical illusions, and visual error in Dante's Commedia and the themes of reflection, mirrors, and meteorological optics, also in the Commedia, a work that Gilson specifies as having nevertheless gone beyond the more limited sources of the earlier poetry. In the third chapter Gilson's analysis achieves a welcome degree of insight into the poet's originality: here Gilson shows how Dante incorporates the scientific knowledge of his day in order to establish a set of limits that circumscribe human action in the physical world but that must be overcome in the course of the pilgrim's journey through his imaginative world. Such moments provide a refreshing alternative to an otherwise rather positivistic view of scientific knowledge as a compendium of facts and sources one either has or has not read. One cannot help but think that researchers in the field of the history of science might be most interested in the imaginative contributions of a specifically poetic knowledge, especially in an age in which the distinction between “hard” and “soft” science was not accorded the kind of unquestioned respect it currently receives.In the second part Gilson, continuing his debunking analysis, argues that the scholarship on Dante and his use of theories of light has remained captivated by the notion of “the metaphysics of light.” This term, Gilson claims, has been used to unify and oversimplify a rather diverse group of doctrines concerning the nature of light and its relation to knowledge, vision, God, and being. Against the grain of the traditional critical trend, Gilson maintains that Dante's thought has nothing in common with the proper metaphysics of light of a Grosseteste—who identifies light as the primary element of being—and that Dante would have had relatively little contact with Neoplatonic theories of emanation. Again, according to Gilson, in applying the imagery of light to his poetic themes, Dante would have had readily available models in the popular theological light imagery of his time; his use of light in the description of the Empyrean is, Gilson states, perhaps the best example of Dante's relative independence from any limited set of sources.Whether Gilson's informative examination of Dante's relative dependence on sources should be understood as liberating the poet from the anxiety of scientific influence remains, however, an open question. Whatever the extent or depth of any enumeration of those sources, it is the moment of creation that astonishes. (shrink)

The fourteenth-century English philosopher and theologian Richard Kilvington presents a useful correction to popular views of medieval philosophy in two ways. On the one hand, he reminds us that to think of medieval philosophy in terms of Aquinas, Duns Scotus and Ockham, or to think of medieval logic in terms of Aristotelian syllogistic, is to overlook vast areas of intellectual endeavour. Kilvington, like many before and after him, was deeply concerned with problems that would now be assigned (...) to philosophy of language; philosophical logic and philosophy of science. He discussed topics in epistemic logic, semantic paradoxes, problems of reference, particularly those connected with the interplay between quantifiers and modal or temporal operators, and problems arising from the use of infinite series in the analysis of motion and change. On the other hand, this very account of his work raises the important issue of conceptual domain. I have spoken as if Kilvington's work can be neatly classified in terms of contemporary interests; and the temptation to read medieval philosophy in modern terms is only strengthened when one recognizes Kilvington as the first member of the group of Oxford calculatores, men such as William Heytesbury and Richard Swineshead, whose discussions of mathematics and physics have caused them to be hailed as forerunners of modern science. (shrink)

This is the first complete English translation of Hasdai Crescas's Light of the Lord, a seminal work of medieval Jewish philosophy. Crescas challenges the Aristotelian underpinnings of medieval thought, introduces alternative physical and metaphysical theories, and presents service to the God of love and benefaction as the goal for humankind.

How does the physics we know today-- a highly professionalized enterprise, inextricably linked to government and industry-- link back to its origins as a liberal art in ancient Greece? What is the path that leads from the old philosophy of nature and its concern with humankind's place in the universe to modern massive international projects that hunt down fundamental particles and industrial laboratories that manufacture marvels? John Heilbron's fascinating history of physics introduces us to Islamic astronomers and mathematicians, (...) calculating the size of the earth whilst their caliphs conquered much of it; to medieval scholar-theologians investigating light; to Galileo, Copernicus, Kepler, and Newton, measuring, and trying to explain, the universe. We visit the 'House of Wisdom' in 9th-century Baghdad; Europe's first universities; the courts of the Renaissance; the Scientific Revolution and the academies of the 18th century; the increasingly specialized world of 20th and 21st century science. Highlighting the shifting relationship between physics, philosophy, mathematics, and technology-- and the implications for humankind's self-understanding-- Heilbron explores the changing place and purpose of physics in the cultures and societies that have nurtured it over the centuries. (shrink)

As early as 1981, about 1 year before Shechtman’s discovery of an actual quasicrystal, Alan L. Mackay discussed, in a seminal paper, the first steps for the expansion of crystallography toward its modern phase. In this phase, new possibilities of structures and order, such as the structures of five-fold symmetry, for crystals have been discovered. Medieval Islamic decorators as well as Albrecht Dürer, Johannes Kepler, Roger Penrose, Mackay himself, and other pioneer crystallographers raised important contributions to the theoretical discovery (...) of crystalline possibilities long before or independently of the discovery of their actual existence. In this paper, I discuss further the philosophical significance of Mackay’s theoretical discovery and his contribution to the expansion of pure geometrical crystallography, biological crystallography, and generalized crystallography. (shrink)

As early as 1981, about 1 year before Shechtman’s discovery of an actual quasicrystal, Alan L. Mackay discussed, in a seminal paper, the first steps for the expansion of crystallography toward its modern phase. In this phase, new possibilities of structures and order, such as the structures of five-fold symmetry, for crystals have been discovered. Medieval Islamic decorators as well as Albrecht Dürer, Johannes Kepler, Roger Penrose, Mackay himself, and other pioneer crystallographers raised important contributions to the theoretical discovery (...) of crystalline possibilities long before or independently of the discovery of their actual existence. In this paper, I discuss further the philosophical significance of Mackay’s theoretical discovery and his contribution to the expansion of pure geometrical crystallography, biological crystallography, and generalized crystallography. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Ideas 61.4 (2000) 539-560 [Access article in PDF] Plenitude, Possibility, and the Limits of Reason: A Medieval Arabic Debate on the Metaphysics of Nature Taneli Kukkonen In a recent article Simo Knuuttila has examined the argumentative patterns of modern cosmology, especially the search in fundamental physics for an "ultimate explanation," a unified "Theory of Everything" that would subsume all more local theories (...) under its aegis. Knuuttila goes on to compare contemporary modes of explanation with previous ways of conceiving of the metaphysics of understanding. As it turns out, on the cosmological borderline where physics shades into metaphysics desires similar at heart have fueled the efforts of thinkers throughout the history of western thought. When what is at stake is the final intelligibility of the world, shared ideals of necessity, transparency, and simplicity come to the fore. More often than not, theological concerns and preconceptions accompany these notions. 1One can react to this finding in one of two ways, either by retorting that the moderns have not gotten very far or by pointing out that earlier discussions on the topic were often quite philosophically sophisticated. In this article I propose to investigate how some of the issues raised by Knuuttila figure in a specific historical context. This is the debate on the pre-eternity of the world initiated by the celebrated Muslim theologian Abû Hâmid al-Ghazâlî (1058-1111) in his polemic arguing for The Incoherence of the Philosophers (Tahâfut al-falâsifa, 1095) and later picked up by the Andalusian philosopher Averroës (1126-98) in [End Page 539] his reply, The Incoherence of the Incoherence (Tahâfut al-tahâfut, 1180). 2 The exceptionally rich cosmological materials could be taken in any number of directions, but I will focus on three main issues: the discussants' construction of the domain of possibilities (i.e. the relation of the possible to the actual), their understanding of the reasonability of creation, and the question of its finitude and infinity. The study is undertaken partly to illustrate the sophistication with which the topics were handled in medieval Islamic philosophy, but in each case I will also draw parallels with certain modern conceptions, and I submit that in each case al-Ghazâlî's and Averroës's debate throws light on the contemporary discussion. In the final section I will develop this contention further by pointing to a connection between finitude and possibilities which I believe has both heuristic and existential value. Plenitude and Possibility Among historians of philosophy it is now acknowledged that in late medieval discussions certain modal theoretical innovations were instrumental in bringing about profound change in the western worldview. A conceptual shift occurred where, roughly speaking, a single intelligible universe was exchanged for several possible worlds. In Knuuttila's estimation this change in worldviews was in some ways more fundamental than anything modern science has produced since. 3 This claim deserves consideration but I would like first to outline what the change was about, for in al-Ghazâlî's and Averroës's debate this shift in modal paradigms is clearly discernible.Representative of the philosophers' point of view, Averroës holds onto the received Arabic Aristotelian interpretation of setting possibilities in a statistical temporal-frequency framework. According to this account, what is truly possible must at some time be realized--this is a technical interpretation of what has after Lovejoy commonly become known as the principle of plenitude. 4 As a [End Page 540] corollary, what always is is necessarily. The cosmological consequences of these assumptions can be outlined as follows. First, lest God's creative possibilities be limited, it must be admitted that the world could have been created however long ago in the past. By extension God must have been able to create the world an infinite time ago. But if it is a genuine possibility that the world is eternally old, then according to the principle of plenitude, this possibility is an actual fact. Once it is... (shrink)

Like any other group of philosophers, scholastic thinkers from the Middle Ages disagreed about even the most fundamental of concepts. With their characteristic style of rigorous semantic and logical analysis, they produced a wide variety of diverse theories about a huge number of topics. The Routledge Companion to Medieval Philosophy offers readers an outstanding survey of many of these diverse theories, on a wide array of subjects. Its 35 chapters, all written exclusively for this Companion by leading international scholars, (...) are organized into seven parts: I Language and Logic II Metaphysics III Cosmology and Physics IV Psychology V Cognition VI Ethics and Moral Philosophy VII Political Philosophy In addition to shedding new light on the most well-known philosophical debates and problems of the medieval era, the Companion brings to the fore topics that may not traditionally be associated with scholastic philosophy, but were in fact a veritable part of the tradition. These include chapters covering scholastic theories about propositions, atomism, consciousness, and democracy and representation. The Routledge Companion to Medieval Philosophy is a helpful, comprehensive introduction to the field for undergraduate students and other newcomers as well as a unique and valuable resource for researchers in all areas of philosophy. (shrink)

How does the physics we know today-- a highly professionalized enterprise, inextricably linked to government and industry-- link back to its origins as a liberal art in ancient Greece? What is the path that leads from the old philosophy of nature and its concern with humankind's place in the universe to modern massive international projects that hunt down fundamental particles and industrial laboratories that manufacture marvels? John Heilbron's fascinating history of physics introduces us to Islamic astronomers and mathematicians, (...) calculating the size of the earth whilst their caliphs conquered much of it; to medieval scholar-theologians investigating light; to Galileo, Copernicus, Kepler, and Newton, measuring, and trying to explain, the universe. We visit the 'House of Wisdom' in 9th-century Baghdad; Europe's first universities; the courts of the Renaissance; the Scientific Revolution and the academies of the 18th century; the increasingly specialized world of 20th and 21st century science. Highlighting the shifting relationship between physics, philosophy, mathematics, and technology-- and the implications for humankind's self-understanding-- Heilbron explores the changing place and purpose of physics in the cultures and societies that have nurtured it over the centuries. (shrink)

7 lectures, Torquay, UK, August 12-20, 1924 (CW 311) These seven intimate, aphoristic talks were presented to a small group on Steiner's final visit to England. Because they were given to "pioneers" dedicated to opening a new Waldorf school, these talks are often considered one of the best introductions to Waldorf education. Steiner shows the necessity for teachers to work on themselves first, in order to transform their own inherent gifts. He explains the need to use humor to keep their (...) teaching lively and imaginative. Above all, he stresses the tremendous importance of doing everything in the knowledge that children are citizens of both the spiritual and the earthly worlds. And, throughout these lectures, he continually returns to the practical value of Waldorf education. These talks are filled with practical illustrations and revolve around certain themes--the need for observation in teachers; the dangers of stressing the intellect too early; children's need for teaching that is concrete and pictorial; the education of children's souls through wonder and reverence; the importance of first presenting the "whole," then the parts, to the children's imagination. Here is one of the best introductions to Waldorf education, straight from the man who started it all. German source: Die Kunst des Erziehens aus dem Erfassen der Menschenwesenhiet (GA 311). ∞ ∞ ∞ SYNOPSIS OF THE LECTURES LECTURE 1: The need for a new art of education. The whole of life must be considered. Process of incarnation as a stupendous task of the spirit. Fundamental changes at seven and fourteen. At seven, the forming of the "new body" out of the "model body" inherited at birth. After birth, the bodily milk as sole nourishment. The teacher's task to give "soul milk" at the change of teeth and "spiritual milk" at puberty. LECTURE 2: In first epoch of life child is wholly sense organ. Nature of child's environment and conduct of surrounding adults of paramount importance. Detailed observation of children and its significance. In second epoch, seven to fourteen, fantasy and imagination as life blood of all education, e.g., in teaching of writing and reading, based on free creative activity of each teacher. The child as integral part of the environment until nine. Teaching about nature must be based on this. The "higher truths" in fairy tales and myths. How the teacher can guide the child through the critical moment of the ninth year. LECTURE 3: How to teach about plants and animals (seven to fourteen). Plants must always be considered, not as specimens, but growing in the soil. The plant belongs to the earth. This is the true picture and gives the child an inward joy. Animals must be spoken of always in connection with humans. All animal qualities and physical characteristics are to be found, in some form, in the human being. Humans as synthesis of the whole animal kingdom. Minerals should not be introduced until twelfth year. History should first be presented in living, imaginative pictures, through legends, myths, and stories. Only at eleven or twelve should any teaching be based on cause and effect, which is foreign to the young child's nature. Some thoughts on punishment, with examples. LECTURE 4: Development of imaginative qualities in the teacher. The story of the violet and the blue sky. Children's questions. Discipline dependent on the right mood of soul. The teacher's own preparation for this. Seating of children according to temperament. Retelling of stories. Importance of imaginative stories that can be recalled in later school life. Drawing of diagrams, from ninth year. Completion and metamorphosis of simple figures, to give children feeling of form and symmetry. Concentration exercises to awaken an active thinking as basis of wisdom for later life. Simple color exercises. A Waldorf school timetable. The "main lesson." LECTURE 5: All teaching matter must be intimately connected with life. In counting, each different number should be connected with the child or what the child sees in the environment. Counting and stepping in rhythm. The body counts. The head looks on. Counting with fingers and toes is good (also writing with the feet). The ONE is the whole. Other numbers proceed from it. Building with bricks is against the child's nature, whose impulse is to proceed from whole to parts, as in medieval thinking. Contrast atomic theory. In real life we have first a basket of apples, a purse of coins. In teaching addition, proceed from the whole. In subtraction, start with minuend and remainder; in multiplication, with product and one factor. Theorem of Pythagoras (eleven-twelve years). Details given of a clear, visual proof, based on practical thinking. This will arouse fresh wonder every time. LECTURE 6: In first seven years etheric body is an inward sculptor. After seven, child has impulse to model and to paint. Teacher must learn anatomy by modeling the organs. Teaching of physiology (nine to twelve years) should be based on modeling. Between seven and fourteen astral body gradually draws into physical body, carrying the breathing by way of nerves, as playing on a lyre. Importance of singing. Child's experience of well being like that of cows chewing the cud. Instrumental music from beginning of school life, wind or strings. Teaching of languages; up to nine through imitation, then beginnings of grammar, as little translation as possible. Vowels are expression of feeling, consonants are imitation of external processes. Each language expresses a different conception. Compare head, Kopf, testa. The parts of speech in relation to the life after death. If language is rightly taught, out of feeling, eurythmy will develop naturally, expressing inner and outer experiences in ordered movements--"visible speech." Finding relationship to space in gymnastics. LECTURE 7: Between seven and fourteen soul qualities are paramount. Beginnings of science teaching from twelfth year only, and connected with real phenomena of life. The problem of fatigue. Wrong conceptions of psychologists. The rhythmic system, predominant in second period, never tires. Rhythm and fantasy. Composition. Sums from real life, not abstractions. Einstein's theory. The kindergarten--imitation of life. Teachers' meetings, the heart of the school. Every child to be in the right class for its age. Importance of some knowledge of trades, e.g., shoemaking, handwork, and embroidery. Children's reports-- characterization, but no grading. Contact with the parents. QUESTIONS AND ANSWERS: The close relationship of Multiplication and Division. How to deal with both together. Transition from the concrete to the abstract in Arithmetic. Not before the ninth year. Healthiness of English weights and measures as related to real life. Decimal system as an intellectual abstraction. Drawing. Lines have no reality in drawing and painting, only boundaries. How to teach children to draw a tree in shading, speaking only of light and color. (Illustration). Line drawing belongs only to geometry. Gymnastics and Sport. Sport is of no educational value, but necessary as belonging to English life. Gymnastics should be taught by demonstration. Religious Instruction. Religion lessons in the Waldorf school given by Catholic priest and Protestant pastor. "Free" religion lessons provided for the other children. Plan of such teaching described, of which the fundamental aim is an understanding of Christianity. The Sunday services. Modern Language Lessons. Choice of languages must be guided by the demands of English life. These can be introduced at an early age. Direct method in language teaching. Closing words by Dr. Steiner on the seriousness of this first attempt to found a school in England. (shrink)

It is supposed to be common knowledge about the history of ideas that one of the few medieval philosophical contributions preserved in modern philosophical thought is the idea that mental phenomena are distinguished from physical phenomena by their intentionality, their directedness toward some object. As is usually the case with such commonplaces about the history of ideas, this claim is not quite true. Medieval philosophers routinely described ordinary physical phenomena, such as reflections in mirrors or sounds in the (...) air, as exhibiting intentionality, while they described what modern philosophers would take to be typically mental phenomena, such as sensation and imagination, as ordinary physical processes. Still, it is true that medieval philosophers would regard all acts of cognition as characterized by intentionality, on account of which all these acts are some sort of representations of their intended objects. This course is going to provide a broad survey of the conceptual relationships between intentionality, cognition and mental representation as conceived by some of the greatest medieval philosophers, including Aquinas, Scotus, Ockham and Buridan, and some of their lesser known contemporaries. The clarification of these conceptual connections sheds some light not only on the intriguing historical relationships between medieval and modern thought on these issues, but also on some fundamental questions in the philosophy of mind as it is conceived today. (shrink)

In the popular literature of physics the electromagnetic field isoften treated as though it has an intrinsic particle nature. When thetheory is examined carefully, quantum theory only makes the weakerrequirement that the emission and absorption of light are restricted todiscrete amounts of energy. There are very few realizable experiments inoptics for which the classical Maxwell theory and the quantum theorymake a different prediction. I discuss some of these experiments with anemphasis on the distinction between what the experiments tell (...) us aboutthe measurement process, and what they tell us about the nature of thelight field. (shrink)

The essay is intended to shed light on the back-stage of contemporary debates about death and the dying, and more specifically on newer trends that emphasise the importance of ‘dying well’ and the moral viability of a ‘good death’. It raises the question as to whether there is a hidden conceptual link between the high medieval tradition of ars moriendi and the modern trend towards embracing (assisted) suicide as a final expression of human autonomy and suggests that this (...) link becomes visible only when death is theologically understood in a twofold way: according to its spiritual side on the one hand, and according to its physical on the other. Drawing inspiration from Bonhoeffer’s exposition of the biblical myth of the Fall and his insights into the link between thanatos and techne, the essay suggests that the compulsive fashion in which modern societies tend to shy away from any contact with the dying that is not mediated by technology or bureaucracy is owed to their refusal to acknowledge the dual character of death, as it is open to theological analysis. (shrink)

The ancient philosopher Theophrastus described a gemstone called lyngurium, purported to be solidified lynx urine, in his work De lapidibus . Knowledge of the stone passed from him to other classical authors and into the medieval lapidary tradition, but there it was almost always linked to the 'learned master Theophrastus'. Although no physical example of the stone appears to have been seen or touched in ancient, medieval, or early modern times, its physical and medicinal properties were continually reiterated (...) and elaborated as if it did 'exist'. By the seventeenth century, it began to disappear from lapidaries, but with no attempt to explain previous authors' errors since it had never 'existed' anyway. In tracing the career of lyngurium, this study sheds some light on the transmission of knowledge from the classical world to the Renaissance and the changing criteria by which such knowledge was judged. (shrink)

The appellation “Western” is, in my view, inappropriate when applied to Ancient Hellas and its greatest product, the Hellenic philosophy. For, as a matter of historical fact, neither the spirit of free inquiry and bold speculation, nor the quest of perfection via autonomous virtuous activity and ethical excellence survived, in the purity of their Hellenic forms, the imposition of inflexible religious doctrines and practices on Christian Europe. The coming of Christianity, with the theocratic proclivity of the Church, especially the hierarchically (...) organized Catholic Church, sealed the fate of Hellenic philosophy in Europe for more than a millennium. Since the Italian Renaissance, several attempts primarily by Platonists to revive the free spirit and other virtues of Hellenic philosophy have been invariably frustrated by violent reactions from religious movements, the Reformation and the Counter-Reformation, and the bloody wars which followed their appearance in Europe. Modern science succeeded to a certain extent, after struggle with the Catholic Church, in freeing itself from the snares of medieval theocratic restrictions. Thus, it managed to reconnect with the scientific spirit of late antiquity and its great achievements, especially in the fields of cosmology, physics, mathematics, and medicine, which enabled modern science to ad-vance further. But it seems that the mainstream European philosophy has failed to follow the example of science and to liberate itself, too. As in the Middle Ages, so in modern and post-modern times the “European philosophy” has continued to play the undignified and servile role of handmaiden of something. In addition to the medieval role of “handmaiden of theology” (ancilla theologiae), since the seventeenth century philosophy in Europe assumed the role of “handmaiden of science” (ancilla scientiae) and, with the coming of the Marxist “scientific socialism,” the extra role of ‘handmaiden of ideology” (ancilla ideologiae). In this respect, the so-called “Western philosophy,” as it has been historically practiced in Christian and partially Islamized Europe, is indeed a very different kind of product from the autonomous intellectual and ethical human activity, which the Ancient Hellenes named philosophia and honored as “the queen of arts and sciences.” In this historical light, Hellenic philosophy would appear to be closer to the Asian philosophies of India, China, Japan, and Korea than to Western or “European philosophy.” So as we stand at the post-cold war era, witnessing the collapse of Soviet-style Socialism and the coming of the post-modern era; as we look at the dawn of a new millennium and dream of a new global order of freedom and democracy, the moment seemspropitious for reflection. We may stop and reflect upon our philosophical past as exemplified in the free spirit of Hellenic philosophy and its misfortunes, its great “passion” in Christian Europe in the last two millennia or so. (shrink)

The Medieval period was one of the richest eras for the philosophical study of religion. Covering the period from the 6th to the 16th century, reaching into the Renaissance, "The History of Western Philosophy of Religion 2" shows how Christian, Islamic and Jewish thinkers explicated and defended their religious faith in light of the philosophical traditions they inherited from the ancient Greeks and Romans. The enterprise of 'faith seeking understanding', as it was dubbed by the medievals themselves, emerges (...) as a vibrant encounter between - and a complex synthesis of - the Platonic, Aristotelian and Hellenistic traditions of antiquity on the one hand, and the scholastic and monastic religious schools of the medieval West, on the other. "Medieval Philosophy of Religion" will be of interest to scholars and students of Philosophy, Medieval Studies, the History of Ideas, and Religion, while remaining accessible to any interested in the rich cultural heritage of medieval religious thought. (shrink)

The opposition of science and religion is a recent phenomenon; in the middle ages, and indeed until the middle of the nineteenth century, there was almost no conflict. In the Middle Ages the objective study of nature - the activity we now call science - was largely the province of religious men. This book looks at the origins of western science and the central role played by the Dominican and Franciscan friars. It explains why these two groups devoted so much (...) intellectual effort to the study of physical and biological phenomena, and distinguishes ’Natural Philosophy’ from ’science’ as presently understood. Though the friars were recognisably ’scientific’ in their approach their motives were religious - they wished to understand the mind of God and the beauty of God’s nature. Even so, as this study makes clear, the roots of western science lie in the monasteries and refuges of the medieval friars - the direct forebears of the anti-scientific Popes of the age of Copernicus and Galileo. Contents: Introduction 1. Philosophy and true philosophy 2. Town air 3. Sapienta and scientia: the cloister and the school 4. nature and the twelfth century 5. Heresy and Dominic 6. The evil and good world 7. Conquest and re-education 8. Dominican re-education 9. Fiat lux! Let there be light! 10. Et facta est lux! And there was light 11. Epilogue. (shrink)

The concept of “representation” is used broadly and uncontroversially throughout neuroscience, in contrast to its highly controversial status within the philosophy of mind and cognitive science. In this paper I first discuss the way that the term is used within neuroscience, in particular describing the strategies by which representations are characterized empirically. I then relate the concept of representation within neuroscience to one that has developed within the field of machine learning. I argue that the recent success of artificial neural (...) networks on certain tasks such as visual object recognition reflects the degree to which those systems exhibit inherent inductive biases that reflect the structure of the physical world. I further argue that any system that is going to behave intelligently in the world must contain representations that reflect the structure of the world; otherwise, the system must perform unconstrained function approximation which is destined to fail due to the curse of dimensionality, in which the number of possible states of the world grows exponentially with the number of dimensions in the space of possible inputs. An analysis of these concepts in light of philosophical debates regarding the ontological status of representations suggests that the representations identified within both biological and artificial neural networks qualify as legitimate representations in the philosophical sense. (shrink)

Causality plays an important role in medieval philosophical writing: even before the rediscovery of Aristotle's major works, the created universe was seen as a rational manifestation of God's action. In the later Middle Ages, the dominant genre of medieval academic writing was the commentary on an authoritative work: Aristotle's Physics and Metaphysics were frequently commented on, and both contain a great deal of material on causation. So the nature of the philosophical and theological themes which were popular (...) in the Middle Ages led to an emphasis on causality. Writers studied the interrelationship of divine grace and natural processes, the role of the will in ethics, free will and determinism: all of these problems have an important causal component. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Seeing and Being Seen in the Later Medieval World: Optics, Theology, and Religious LifeA. Mark SmithDallas G. Denery, II. Seeing and Being Seen in the Later Medieval World: Optics, Theology, and Religious Life. Cambridge Studies in Medieval Life and Thought (Fourth Series), 63. Cambridge-New York: Cambridge University Press, 2005. Pp. x + 202. Cloth, $75.00.Among the metaphors we live by (to borrow from Lakoff and (...) Johnson), visual metaphors figure prominently in our common discourse about cognition. We are well aware, of course, that in claiming to "see" meanings or "view" ideas in certain lights, we are speaking figuratively. Yet the analogy between thinking and seeing is more than a linguistic artifact. Until the seventeenth century, Western thinkers took it seriously, none more seriously perhaps than the thirteenth-century scholastic community. The upshot was an epistemology based on two cardinal assumptions: first, that the physical world manifests itself to us through species passing from external objects into the soul, and second, that visual perception is providentially designed to yield a faithful conceptual picture of physical reality and its ordering structure.This latter assumption found strong support in Perspectivist optics, which took mature form in the 1260s as an amalgam of Alhacenian visual analysis and species-theory. Hence, by the later thirteenth century it was widely believed not only that vision is essentially cognitive but also that cognition is essentially visual. During the first half of the fourteenth century, this idea was subjected to trenchant criticism and thereby rejected out of hand by several thinkers, among whom Nicolaus of Autrecourt is a particular subject of emphasis in this study.It has become something of a truism lately that theories are neither accepted nor rejected on logical grounds alone. This one, Denery claims, is no exception since there were compelling theological grounds for its adoption. Foremost among these was a new emphasis on self-presentation in the thirteenth century. That emphasis manifested itself at two levels. On the one hand, the clerical orders were encouraged to give the right appearance and to suit the appearance to specific settings. This was especially important among the new preaching orders, whose members had to put on so many public faces that they came to adopt what Denery calls "heuristics of adaptation." On the other hand, new modes of confession and penance required deep introspection on the penitent's part, so that he might "see" himself for the complex of sinful motives and actions he is, as well as experience the contrition-yielding horror such a sight arouses. In both cases, the appearances should reveal the underlying reality: the preacher's spiritual commitment reflected in his mien, the penitent's contrition in the recognition of his vitiated nature.But how can we be sure that what we see in these instances is true? This question is particularly vexing in the case of religious introspection, for, as St. Paul reminds us, our moral vision is distorted by the mirror that darkens it. Enter the analogy between physical vision and cognition. Visual illusions, such as those arising from reflection, were of paramount concern to Perspectivist theorists, who devoted considerable effort to rationalizing them according to unmet normative conditions, such as adequate illumination, appropriate distance, or a healthy eye. Reflected vision is subject to transgressions of these conditions, but adding insult to their injury is that, when seen in mirrors, objects invariably appear displaced and often look distorted in size, shape, and orientation. Fortunately, reason enables us to rectify such illusions according to specific rules that govern visual perception in general and reflection in particular.If the analogy between physical and moral vision holds true, then reason ought to be the corrective in both cases. At first blush, this seems to be Peter of Limoges's position in the Tractatus moralis de oculo (c. 1280), but, as Denery insists, Peter's real point is that our inner, moral vision is so clouded we can rarely tell either how or even that it is distorted. The hoped-for normative circumstances and principles enabling us to rectify it are far too vague and protean to yield certainty from introspection. Given the tight conceptual linkage between... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:BOOK REVIEWS 517 she does on these issues; this is hardly the case. And lastly she fails to discern that some feminist christology does not spring from a love for Jesus and what he has done through his cross and resurrection; rather, Jesus is merely used (and thus abused) to further a theological and political agenda. [Men obviously are not immune from this either.] Despite my disagreements with some (...) of Johnson's arguments and conclusions, and despite my disappointment at the way she addresses the feminist issues, I found this hook to he a basically reliable and clear summary of the christology of the last forty years. Whether it has all been true development, as Johnson maintains, is a debatable question. Nonetheless, this book does elaborate the contemporary issues and possible answers that confront christology today, and for this makes it a book well worth reading. Mother of God Community Washington. D.C. THOMAS WEINANDY, O.F.M. Cap. The Philosophical Theology of John Duns Scotus. By ALLAN B. WOLTER, O.F.M. Ed. Marilyn McCord Adams. Ithaca, N.Y.: Cornell University Press, 1990. Pp. ix+ 356. $47.50. Duns Scotus was a brilliant light that flashed a brief time across the medieval sky hut was destined ultimately to he outshone by other luminaries immediately preceding him (Aquinas) and following him (Ockham). Perhaps no individual in the past half century has done more to illuminate the Subtle Doctor's thought and times than Allan B. Wolter, O.F.M. Both his editing and his translating of primary sources as well as his detailed readings and expositions of Scotus's theories have put medieval scholars in his debt. The present volume is a collection of thirteen essays on particular aspects of Scotus's work, preceded by an introduction. Ten of the essays have been previously published in other sources ranging from.the late 1940s to the present. But as editor Marilyn McCord Adams points out in her forward, many of these can be found only with difficulty in often inaccessible journals and books. Thus the value of this single volume. The essays are grouped under three headings: metaphysics and epistemology, action theory and ethics, and philosophical theology. As is often true with any volume spanning a number of topics and years, the quality of exposition and analysis is uneven. Obviously, in a limited space, I cannot hope to treat all subjects in a volume as comprehensive 518 BOOK REVIEWS as Wolter's. Permit me, however, to begin by making some general comments and then to narrow my remarks to one particular issue. Wolter's introduction to the volume is as clear and concise an overview of Scotus's ideas as one is likely to find anywhere in the literature. In general, the essays in the first part of the book on matters meta· physical and epistemological are quite solid. Here we find explicated many of the concepts which have become identified with Scotus: the formal distinction, univocity of being, the common nature and the hraecceity that constitutes distinct individuals. Wolter does justice to the subtlety and brilliance of Scotus's thinking and allows readers both old and new to Scotus to acknowledge him as a metaphysician for the ages. The author is particularly adept at explicating with helpful analogies some of the Subtle Doctor's most difficult concepts. I benefitted from his thought-provoking comparison between the formal distinction and a spotlight on a stage which can illuminate different and distinguishable aspects of the same reality. The next section on action rtheory and ethics draws in part on Wolter's work which culminated in the 1986 publication of Duns Scotus on the Will and Morality. Wolter has been in the forefront of those who urge that Scotus's description of an innate affection for justice in the will is crucial in understanding the freedom Scotus thought proper to humans. What remains unclear to me is how this strand in Scotus's writing relates to others which clearly imply a libertarian view of free• dom emphasizing the will's utter self-determination. The problem I see is this: if the will truly is self-determining, then an innate affectio justitiae seems to... (shrink)

Representation is typically taken to be importantly separate from its physical implementation. This is exemplified in Marr’s three-level framework, widely cited and often adopted in neuroscience. However, the separation between representation and physical implementation is not a necessary feature of information-processing systems. In particular, when it comes to analog computational systems, Marr’s representational/algorithmic level and implementational level collapse into a single level. Insofar as analog computation is a better way of understanding neural computation than other notions, Marr’s three-level framework must (...) then be amended into a two-level framework. However, far from being a problem or limitation, this sheds lights on how to understand physical media as being representational, but without a separate, medium-independent representational level. (shrink)

2003 Paul Bunge Prize of the Hans R. Jenemann Foundation for the History of Scientific Instruments Judging the brightness and color of light has long been contentious. Alternately described as impossible and routine, it was beset by problems both technical and social. How trustworthy could such measurements be? Was the best standard of intensity a gas lamp, an incandescent bulb, or a glowing pool of molten metal? And how much did the answers depend on the background of the specialist? (...) A History of Light and Colour Measurement: Science in the Shadows is a history of the hidden workings of physical science-a technical endeavor embedded in a social context. It argues that this "undisciplined" subject, straddling academia, commerce, and regulation, may be typical not only of 20th century science, but of its future. Attracting scientists, engineers, industrialists, and artists, the developing subject produced a new breed of practitioners having mixed provenance. The new measurers of light had to decide the shape not only of their specialism but of their careers: were they to be a part of physics, engineering, or psychology? The physical scientists who dominated the subject into the early 20th century made their central aim the replacement of the problematic human eye with physical detectors of light. For psychologists between the wars, though, describing the complexity of color was more important than quantifying a handful of its dimensions. And after WWII, military designers shaped the subject of radiometry and subsumed photometry and colorimetry within it. Never attaining a professional cachet, these various specialists moved fluidly between science and technology; through government, industry, and administration. (shrink)

If is often taken for granted that on a rotating disk it is possible to operate a global 3+1 splitting of spacetime such that both lengths and time intervals are uniquely defined in terms of measurements performed by real rods and real clocks at rest on the platform. This paper shows that this assumption, although widespread and apparently trivial, leads to an anisotropy of the velocity of two light beams traveling in opposite directions along the rim of the disk, (...) which in turn implies some recently pointed out paradoxical consequences undermining the self-consistency of the special theory of relativity (SRT). A correct application of the SRT solves the problem and recovers complete internal consistency for the theory. As an immediate consequence, it is shown that the Sagnac effect only depends on the nonhomogeneity of time of the platform and has nothing to do with any anisotropy of the speed of light along the rim of the disk, contrary to an incorrect but widely held idea. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Beyond Heaven and Earth: A Cognitive Theory of Religion by Gabriel LevyKevin SchilbrackBeyond Heaven and Earth: A Cognitive Theory of Religion. Gabriel Levy. Cambridge, MA: The MIT Press, 2022. 249 pp. $45.00 paperback; open access.The interdisciplinary field of religious studies includes both the humanities and social sciences in a tricky detente. Some religion scholars focus on interpreting texts, teachings, and rituals in an effort to grasp what religious (...) practitioners understand themselves to be doing. Other scholars want to move beyond the the practitioners’ views to create explanatory accounts of religion in terms of social power, psychological benefits, and modules in the evolved brain—causal accounts of which the practitioners might not be aware or that they might deny. Gabriel Levy argues that to develop consilience between the divergent efforts of the humanities and the sciences, the academic study of religion would be well served by developing a more adequate metaphysics that can do justice simultaneously to human behavior as moved both by subjective reasons and by material forces. Specifically, he recommends the “anomalous monism” of Donald Davidson. [End Page 98]According to this view, there is only one kind of reality, and this is a monist metaphysics that includes no nonmaterial or supernatural entities. However, this one kind of reality is “anomalous” in that the world we experience together permits two irreducible vocabularies, one that is physical and deterministic and another that is mental and includes free will. Davidson considered this two-sided approach Spinozistic (169), and Levy notes its similarities to Thomas Nagel’s “neutral monism” (8, 35, 50–51). In short, then, Levy is proposing to scholars of religion a non-reductive but science-friendly “pragmatist monism” (8) that would be congenial to many readers of this journal. Such a metaphysics would also be in line with the methodological naturalism that, for many, defines the legitimate scope of the academy. We might therefore consider this book an example of a philosophy of religious studies, or even a metaphysics for religious studies.An important feature of Davidson’s approach is that, on his account, semantic content is necessarily intersubjective and therefore non-nomological and irreducible to the physical. Imagine a parent offering their prelinguistic child a doll while asking, “Do you want your doll?” or pulling the child away from a neighbor’s dog while telling them, “You have to be careful around dogs.” Davidson argues that human beings learn the meaning of words and sentences in social exchanges like these as the listener makes an educated guess about the entities to which the other person is referring, a process that Davidson calls “triangulation.” The generation of meaning on this model depends on the human capacity for shared intentionality about things in the world. Davidson argues that having meaningful thoughts, even when alone, then requires that one has had intersubjective, “triangulated” experiences like these. As Levy says, “semantic content arises in immanent, contextual, enacted dialogue and conversation with other agents” (182). It follows that this Davidsonian approach insists on irreducible, non-eliminable mental categories such as meaning, belief, and reasons, now recast in terms of practical engagement with things rather than inner representations of them. Many in religious studies are critical of the field’s focus on subjective categories like these, but, as Levy points out, the meaning-generating and reason-giving subject on a Davidsonian model is necessarily a socially embedded self and not the free-floating, disembodied, or ahistorical self that is critiqued by post-structuralists like Michel Foucault (169–70).Levy introduces this model (ch. 1) and then explores several topics in its light. He proposes that beliefs about religious entities are a subset of imagining fictional entities, so that Mickey Mouse, Santa Claus, and Zeus are in the same cognitive category (ch. 2). He argues that there is a continuum between the human ability to interpret language and the ability of human beings and [End Page 99] other animals to interpret information in their natural environments (ch. 3). In the last three chapters, he connects his discussion to the Sefer Yitzirah, a medieval Jewish mystical “book of creation” that describes the cosmos as structured by language (ch. 4), to... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Descartes’s Concept of MindJoanna ForstromLilli Alanen. Descartes’s Concept of Mind. Cambridge, MA: Harvard University Press, 2003. pp. xv + 355. Cloth, $65.00.Descartes's Concept of Mind takes as its task that of redressing "the distortions of Descartes's concept of human mind and thinking caused by the Cartesian myth that Ryle justly sought to correct, but that his gripping caricature has helped keep alive" (x). Offering a close reading of (...) the text in its philosophical and historical context and examining its place in contemporary literature, Alanen develops Descartes's philosophy of mind, broadly construed, with a focus on the embodiment of the human mind.Alanen sees Descartes's philosophy of mind as "the result of an ongoing struggle to adjust some basic views about human nature, thought and agency rooted in experience and tradition to the new picture of the universe" (8). Taking this perspective reveals a greater continuity in his fundamental views. Changes, she suggests, are a matter of emphasis, subject matter, and perspective. She grants Descartes's dualism and his view of the mind-body union and chooses to focus instead on the mind as embodied.In developing the analysis Alanen takes a somewhat chronological approach in her seven chapters. Chapter one is a prehistory of Descartes's philosophy of mind focusing on his unpublished, early writings. She looks at his early intellectual ambitions and interests beginning with mathematics and a science of nature and then expanding into metaphysics. The distinctive views of his later work are formed, according to Alanen, during this time. In chapter two, three different perspectives about the nature of man are distinguished: man as an object of mechanistic physics, man as mind or intellect and so an epistemic subject, and man as a real union between the mind and body. She focuses on the third, as it is the real union that has been overlooked or misconstrued by most. How this union is to [End Page 115] be conceived, and the epistemological implications of it are explored. By highlighting the consequences of Descartes's distinction between the mind and the body in terms of knowledge, Alanen directly confronts Ryle and his legacy. In short, because we cannot expect to have knowledge of the mind—body union, we cannot conceive it—there is no category mistake to be made. She elaborates much more in the chapter.Chapters three, four and five, are centered on the writings from 1637-44. Here Alanen focuses on Descartes's notion of thinking and modes of thoughts. The way that thinking is defined, its intentional and representative nature, and the status of sensations as mental phenomena are carefully explored in light of discussions of these issues in contemporary literature and in the literature of Descartes's time. The issues are complex, but the writing is clear and easy to follow. Her discussions of representation, sense perception, and material falsity are particularly good in these chapters.Chapters six and seven reflect the issues that Princess Elisabeth raised: emotions, will, and related moral issues. These two chapters are perhaps the most significant in the book. Chapter six centers on The Passions. The passions depend on the union of the mind and body and do not consist in thought alone. Alanen sees them as a subclass of thoughts. She examines carefully the intentionality of emotions, the distinction between action and passions, and the functions attributed to the body and the soul. She raises a number of questions, some of which chapter seven begins to answer, and others which are left to challenge the reader. Chapter seven is about free will and virtue. Alanen places Descartes's conception of the will and agency in the context of the debate between the voluntarists and the intellectualists. She considers the ancient and medieval antecedents, with a focus on the Stoics as she develops her analysis. She also includes a good discussion of Descartes's contemporaries, and their reactions to his work. Her inclusion of secondary literature is well done. One is left with a better understanding of the complexities of Descartes's understanding of human nature and free will.Overall, Alanen's book is an excellent contribution to... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:AN EXPLICATION OF THE DE HEBDOMADIBUS OF BOETHIUS IN THE LlGHT OF ST. THOMAS'S COMMENTARY HE WRITINGS o:f Ancius Manlius Severinus Boehius exercised a powerful influence on the nature and evelopment o:f mediaeval philosophy. The extent of his influence was such that I think it fair to say that anyone seeking more than a superficial grasp of mediaeval philosophy must acquire some first-hand knowledge of his work. The trouble (...) is, however, that while The Corwlsation of Philosophy is well-known and much commented upon, Boethius's other works are relatively neglected.1 Included in this latter group are the five theological tractates, one of which has this imposing title: Quomodo Substantiae In Eo Quad Sint Bonae Sint Cum Non Sint Substantialia Bona. This tractate also has the more managable title De Hebdomadibus and it is as such that I shall refer to it throughout this article.2 I have chosen to give an explication of the De Hebdomadibus for three reasons. First the problem with which it deals (the nature of the relation between goodness and substance) is intrinsically interesting and Boethius's solution to the problem is a model of philosophical analysis. Second, in addition to the fact that the philosophical status of the nine axioms listed in the tractate is a matter of some scholarly controversy, the answer to the obvious question of how these axioms function in the tractate as a whole is not at all clear. And third, this tractate is philosophically significant to those philosophers who take St. 1 I am obliged to Professor Ralph Mcinerny for awakening my interest in Boethius and for his suggestion that the De Hebdomadibus would repay careful study. 2 All references are to the H. F. Stewart and E. K. Rand edition of The Theological Traotates and The Consolation of Philosophy, in the Loeb Classical Library (Cambridge, Massachusetts: Harvard University Press, 1973). 419 420 GERARD CASEY Thomas as their inspiration since it appears that St. Thomas's existence/essence distinction is adumbrated here. I shall begin my explication by giving a brief overview of the main lines of the tractate. Then I shall lay out the arguments contained in the statement and resolution of the dilemma which Boethius constructs, indicating (by means of Roman numerals in parentheses ) where I think particular axioms are meant to apply. Finally, I shall display the axioms as perspicuously as possible and comment on them. Overview The groundplan of the De Hebdomadibus is as follows. It begins with a brief introduction which contains the nine axioms. Then the problem to be considered is outlined in the form of the following dilemma. Things which are are good. This is the basic assumption which will generate the dilemma. Things which are good are so either by virtue of their substance or by participation. If they are good by virtue of their substance then, since God is the only substantial good, we arrive at an impious conclusion: we identify creatures with their Creator. lf they are good by participation then we generate a contradiction : things do and do not tend toward the good. Therefore, the conclusion must be that things which are are not good, which manifestly contradicts the basic assumption. Boethius's solution to the dilemma makes use of a thought-experiment. Abstracting from the first good he distinguishes locutions such as ' to be ' from locutions such as ' to be good.' On the basis of this distinction he is led to conclude that goodness is either a property of things or a principle of things. Re-introducing the notion of the first good, he notes that it is good by virtue of its very being. Secondary goods are also good by virtue of their being but only because that being derives from the will of the first good. Boethius cautions us against likening the being of particular things to the being of the first good and concludes the tractate by considering and refuting two objections to his solution. THE DE HEBDOMADIBUS IN THE LIGHT OF ST. THOMAS 421 The theme of the tractate is the problem of how substances can be good in virtue of their being without, at the same time... (shrink)

Duns Scotus, along with Thomas Aquinas and William of Ockham, was one of the three most talented and influential of the medieval schoolmen, and a highly original thinker. This book examines the central concepts in his physics, including matter, space, time, and unity.

In lieu of an abstract, here is a brief excerpt of the content:BOOK REVIEWS 755 preaching. The question posed by Richard Kieckhefer whether the mystical birth of the Word in the soul can be considered to be a conscious event (discussed briefly on p. 191) may not be capable of satisfactory resolution in terms of modern psychology, especially pop psychology. But there is ample evidence in Eckhart's own words (cf. Sermons DW 10 and DW 68) that awareness must accompany such (...) a breakthrough to be fully human, even if the awareness itself is not the source of bliss. The preceding misgivings notwithstanding, I consider Frank Tobin's book to be a major contribution by a serious scholar in the field, a necessary adjunct in the rapidly growing number of vcolumes in the field of Eckhart studies. As a primer of scholastic thought and language, it.fa an excellent introductory text, especially for readers unfamiliar with the area. And, despite Tobin's modest reservations, even medieval Germanists and Eckhart specialists will find much in it of value. It is a book that can be consulted thoughtfully 1and 1 even freqently with pl'ofit. Loyola University of Chicago Chicago, Illinois RICHARD WooDs, O.P. The Virtue of Faith and Other Essays in Philosophical Theology. By ROBERT MERRIHEW ADAMS. New York and Oxford: Oxford University Press, 1987. Pp. 270. This impressive volume includes most of the material on the philosophy of religion that the author has published in the last fifteen years, together with some additional items. Philosophy of religion has close links with other areas of philosophy, for instance metaphysics, epistemology, ethics, and the philosophy of mind; and several papers argue that theistic belief consorts well with otherwise acceptable positions in these areas. The author roundly contests the view that has recently been in vogue, that there is no matter of fact about the existence and nature of God, and that as a consequence human religious phenomena are the only religious subject matter available for such studies as are to claim academic respectability. He is vehemently 'realist' in this matter. Whatever our beliefs about the issue, he insists, God exists or does not exist, is omnipotent or is not omnipotent, and so forth. The author's realism is combined with what he sees as a moderate scepticism. It is liable to be objected that scepticism naturally and inevitably leads to subjectivism and anti-realism, but this, according to 756 BOOK REVIEWS the author, is a mistake. After all, the assumption, made by persons of common sense and by most philosophers, that physical objects exist and have the properties that they do have independently of our perceiving and thinking about them, implies that there is a gap between objects and our apprehensions of them, which is such that we can never he totally certain of their reality by way of any possible experience. 'This gap inevitably introduces a greater or smaller degree of unprovability into our beliefs about the objectively real. Realism thus goes naturally with some kind of scepticism, and with a need for faith.' This consorts well with the author's view that in matters of religion, as in most matters of concern to philosophers, conclusive proof is impossible, for all that beliefs on these topics may he more or less reasonable, and firm convictions may be appropriate. Thus, while there are no knock-down proofs for the existense of God, the traditional arguments have, and deserve to have, some persausive force, especially when considered cumulatively. Most of the papers here are meant to contribute at least indirectly to such a cumulative case for the existence of God, clearing away some objection, or putting some aspect of theistic belief in a more favorable light than that in which it often appears. The hook is divided into four sections, on faith, the problem of evil, God and ethics, and the metaphysics of theism. While all of the papers display admirable learning and philosophical skill, I was particularly intrigued by the last one, 'Flavors, Colors and God'. Here it is argued, following Descartes and Locke, that the best explanation of the manner in which phenomenal qualia are apparently related to physical properties is a theological one. Elsewhere, Anselm's arguments are formalized with dazzling... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:BOOK REVIEWS 745 and psycholOgical doctrine developed in Bks. I-II in terms of the traditional theme of macrocosm and microcosm. Theologically, the author understands the classical gods as symbolizing intellects, heavenly bodies, or spirits. The allegorizing tendencies of Porphyry and even Proclus are much in evidence, as abundant citation of parallel texts demonstrates. The most important psychological doctrine inherited from the Neoplatonists, albeit greatly simplified and heavily allegorized, is (...) the deification of the divine (Mercury) and human (Philology) intellects. Gersh breaks no new ground in this chapter, but his crisp presentation of Martianus's allegory against the Neoplatonic metaphysical background affords an easy grasp of how he fits into the Platonic tradition. The outstanding virtue of this study is that it assembles the fruits of decades of scholarship and, together with exhaustive textual summaries and quotations, weds Quellenforschung with incisive analysis. It is a gold mine of information for scholars of late antique and medieval philosophy, who now have all the evidence at their fingertips, even if specific interpretations do not always warrant assent. I look forward with great eagerness to the appearance of the subsequent volumes. The bibliography is outstanding and the index of Latin texts is quite useful. In this time of increasingly shoddy copy editing, the University of Notre Dame Press is to be commended for producing such a large and complex book with so few misprints (I noticed fewer than half a dozen, and all of them minor). Department of Philosophy University of New Mexico Albuquerque, New Mexico JOHN BussANICH Ordering Wisdom. The Hierarchy of Philosophical Discourse in Aquinas. By MARK D. JoRDAN. Notre Dame: University of Notre Dame Press, 1986. 297 pp., bibliography and index. Hardcover, $35.00. Thomas Aquinas is primarily a theologian. The object of the majority of his works is the revealed God. He is also a philosopher-a great one-although in thiis modality he is much less known. The greater part of his philosophical works are commentaries on Aristotle. Consequently, although his commentaries are masterpieces, the reader does not know how much Thomas ·agrees with the Greek philosopher, and how much his commentaries are his own doctrine. Any serious study of Aquinas as a philosopher is therefore welcome. 746 BOOK REVIEWS The present volume, Ordering Wisdom: The Hierarchy of Philosophical Discourse in Aquinas, by Mark Jordan, is indeed a profound and professional investigation of Aquinas as a philosopher. The scope of Jordan's volume is ambtitious and modest at the same time. Ambitious because there are a lot of philosophical questions discussed in the volume. Modest because the reader cannot expect an exhaustive explanation of the contents of Aquinas's philosophical works. The present work is not easy to read. It is very synthetic and dense, on occasion a little obscure, but always profound and very personal. Jordan 1is a philosopher familiar with his subject. The book is really an "ordering wisdom," which positions the different discourses as part of a whole. Analysis and synthesis are used hand in hand, and the reader feels satisfied with new insights. The texts are presented in relation to their historical sources. We know few studies on Aquinas with so many and valuable references to the sources: Aristotle, Plato, Boethius, Averroes, Avicena, Maimonides, and countless others are to light, and their connection with Aquinas revealed. To know AqUJinas in relation to his philosophical sources is to know him better. Jordan's treatise may become a classical volume for the understanding of Aquinas's philosophy in relation to tradition. The philosophical discourses of appeal to the hut this intelligibility is always incomplete and subordinated to the greater intelligibility of revelation and theology. Jordan never forgets this, and he always reminds us of the intrinsic value of philosophy which, in the end, gives way to a greater wisdom. The quotations of Aquinas are carefully selected and in Latin. This may perhaps narrow the number of readers of this work, but it gains in exactitude and clarity, for no ideal translation can match the original Latin text. For whom is this volume written? What is the purpose of these discourses? Those who wish to investigate the hooks of Physics and Metaphysics must engross themselves in a... (shrink)

Alexej Remizov is usually regarded by literary critics as a Symbolist rather than a Futurist writer. However, I would posit that Remizov similarly to the Futurists viewed language as “logos,” bozhestvennii glagol. According to the mystical interpretation of the famous words “At the beginning there was Word and the Word was with God and the Word was God”, when God was creating the world he named the objects, and these abstract names became a force for the appearance of an object (...) in physical reality. In the light of these words, The Medieval mystical and magical philosophers claimed that one could restore the divine language of Creation, possess the ability to create objects anew, and thereby become Creator himself. One can argue that a major goal of Remizov was similar to that of hisMedieval predecessors: to reveal the mystical power of language in order to create, not to describe reality. The paper analyzes three chapters from Alexej Remizov’s Rossiya v pis’menah, a book which can be read as a manifesto of Remizov’s attitude toward language and reality, and discuss possible sourcesthat might have influenced Remizov in his attitude towards language. (shrink)

In Quodlibet XV q.13, Henry of Ghent considers whether the Virgin Mary was immaculately conceived. He argues that she was not, but rather possessed sin only at the first instant of her existence. Because Henry’s defense of this position involves an elaborate discussion of motion and mutation, his discussion marks an important contribution to medieval discussions of Aristotelian natural philosophy. In fact, a number of scholars have identified Henry’s discussion as the source of an unusual fourteenth-century theory of change (...) referred to as “quasi-Aristotelianism” (so-called because the account purports to be Aristotelian but is not). My aim in the paper is two-fold: first, to show that Henry's position is not quasi-Aristotelian in the sense that scholars have supposed; second, to show that, even so, his discussion in q. 13 does involve a novel interpretation of Aristotle’s account of instantaneous change. (shrink)

A conservation principles tell us that some quantity, quality, or aspect remains constant through change. Such principles appear already in ancient and medieval natural philosophy. In one important strand of Greek cosmology, the rotatory motion of the celestial orbs is eternal and immutable. In optics, from at least the time of Euclid, the angle of reflection is equal to the angle of incidence when a ray of light is reflected. According to some versions of the medieval impetus (...) theory of motion, impetus remains in a projected body (and the associated motion persists) permanently unless the body is subject to outside interference. These examples could be multiplied. But it was in the seventeenth century that conservation principles began to play an absolutely central role in scientific theories. Each of Galileo Galilei, René Descartes, Christiaan Huygens, Gottfried Leibniz, and Isaac Newton founded his approach to physics upon the principle of inertia—that unless interfered with a body will undergo uniform rectilinear motion. A multitude of other conservation principles gained currency during the seventeenth century—some still with us, some long ago left behind. Descartes provides an interesting example of an author who attempted to derive all of his physical principles from conservation laws (Principles of Philosophy, see especially articles 36 to 42 of Part II). Descartes believed that the principles of his physics could be derived from the immutability of God, supplemented only by very weak assumptions about the existence of change in the world. He claims, in fact, that we ought to postulate the strongest conservation laws consistent with such change. These include. (shrink)

This volume, including sixteen contributions, analyses ancient and medieval theories of intentionality in various contexts: perception, imagination, and intellectual thinking. It sheds new light on classical theories and examines neglected sources, both Greek and Latin.

Volume 2 covers one of the richest eras for the philosophical study of religion. Covering the period from the 6th century to the Renaissance, this volume shows how Christian, Islamic and Jewish thinkers explicated and defended their religious faith in light of the philosophical traditions they inherited from the ancient Greeks and Romans. The enterprise of 'faith seeking understanding', as it was dubbed by the medievals themselves, emerges as a vibrant encounter between - and a complex synthesis of - (...) the Platonic, Aristotelian and Hellenistic traditions of antiquity on the one hand, and the scholastic and monastic religious schools of the medieval West, on the other. (shrink)

After discussing in the first five sections the meaning and the difficulties of the principle of relativity we present a new sel of spacetime transformations between inertial systems (“inertial” transformations), based on three assumptions: (1) The two-way velocity of light is c in all inertial systems and in all directions; (2) Time dilation effects take place with the usual relativistic factor; (3) Clocks are synchronized in the way chosen by nature itself, e.g., in the Sagnac effect. We show that (...) our new transformation laws can explain the available experimental evidence in spite of the implied noninvariance of the one-way velocity of light. (shrink)

There will be more philosophy than physics in this paper for I make no pretentions to an expert knowledge of physics. Categories are, however, in my line; and here I may have some insight.In the theory of relativity much depends upon the conception of the velocity of light in empty space. Such is the expression Einstein employs. If this velocity is to be a quantity independent of the choice of the inertial system to which it is referred, (...) no absolute meaning can be assigned to the conception of the simultaneity of events that occur at points separated by a distance in space. Rather a special time must be allocated to every inertial system. “It is in consequence of this that space and time are welded together into a uniform four-dimensional continuum.” Thus succinctly does Einstein express the c hoice in his article in the Encyclopedia Britannica. (shrink)

Why is the future so different from the past? Why does the past affect the future and not the other way round? The universe began with the Big Bang - will it end with a `Big Crunch'? Now in paperback, this book presents an innovative and controversial view of time and contemporary physics. Price urges physicists, philosophers, and anyone who has ever pondered the paradoxes of time to look at the world from a fresh perspective, and throws fascinating new (...) light on some of the great mysteries of the universe. (shrink)

Like bundles of homogeneous light or particles that are scattered in physics experiments, says Goris, the homogeneous field of metaphysics was dispersed in the 14th century. He connects that dispersion to the contemporary rejection of metaphysics. His topics are the analysis of concepts, the contested primacy, scattering the homogeneous field of me.

The central recommendation of this article is that philosophers trained in the analytic tradition ought to add the sensibilities and skills of the historian to their methodological toolkit. The value of an historical approach to strictly philosophical matters is illustrated by a case study focussing on the medieval origin of conceivability arguments and contemporary views of modality. It is shown that common metaphilosophical views about the nature of the philosophical enterprise as well as certain inference patterns found in thinkers (...) from Descartes to Chalmers have their origin in the theological concerns of the Scholastics. Since these assumptions and inference patterns are difficult to motivate when shorn of their original theological context, the upshot is that much post-Cartesian philosophy is cast in an altogether unfamiliar, and probably unwelcome, light. The methodological point, however, is that this philosophical gain is born of acquaintance with the history of ideas. (shrink)