Medieval Philosophy of Nature

This paper argues that, contrary to what one might think, early modern rationalism displays an increasing and well-grounded sensitivity to certain metaphysical questions the substantial form was designed to answer – despite the fact that the notion itself was in such disrepute, and emphatically banished from natural philosophy. This main thesis is established by examining the thought of Descartes, Spinoza, and Leibniz through the framework constituted by what have been designated as the two aspects, metaphysical and physical, of the substantial (...) form. This examination shows that Descartes ends up assigning the soul a notable metaphysical task formerly assigned to the substantial form, whereas Spinoza advances a theory of essences motivated by the philosophical concerns behind the two aspects of the substantial form. Leibniz finally makes a sharp distinction between natural philosophy and metaphysics as he develops a dynamistic theory that deliberately aims at understanding the substantial form in a new fashion. This line of development is designated as one major factor contributing to the separation of philosophy and natural science. -/- . (shrink)

This paper argues that to negate the ontological difference between the natural and the artificial, is not plausible; nor is the reduction of the natural to the artificial or vice versa possible. Except if one intends to empty the semantic content of the terms and notions: “natural” and “artificial.” Most philosophical discussions on Artificial Intelligence (AI) have always been in relation to the human person, especially as it relates to human intelligence, consciousness and/or mind in general. This paper, intends to (...) broaden the conversation, by discussing AI in relation to the notions of “nature” and the “artificial.” This intention is to more critically understand the artificiality in and of artificial intelligence. To achieve this, the notion of “nature” in Aristotle’s Philosophy of Nature, has been employed as an epistemological tool in interrogating the notion of the artificial and the objectives of the science and technology of Artificial Intelligence. (shrink)

This paper investigates how later medieval intellectuals dealt with perspectiva – the medieval discipline of optics, which had seen considerable popularity in Latin Europe since the 13th century and was epitomized in several “books of knowledge” of differing scopes, levels of difficulty and intended audience. This paper is focused narrowly on one of these intellectuals – Reimbotus de Castro (fl. 1350s–1380s), who was not only personal physician to the Roman Emperor Charles IV but was also a diligent copyist and abbreviator (...) of many quadrivial and medical texts, and the owner of several codices now kept in the Bibliotheca Palatina. One of these codices, Pal. lat. 1380, includes two optical treatises copied by Reimbot himself. A closer reading of these texts, hitherto unnoticed by historians of medieval science, provides fresh insight into the reception of optical knowledge in the intellectual milieu of Paris in the 1360s, when Reimbot resided here. The first text is Reimbot’s reportatio of lectures on the famous optical textbook Perspectiva communis by John Peckham; the second is Reimbot’s redaction of the unknown optical compendium Perspectiva cum sit una. Finally, this paper addresses the issue of why optics was interesting at all for people at the intersection of the scholarly and courtly communities like Reimbot (and late medieval scholars generally). It is suggested that medieval optics, being useful for astronomical observations, could be considered a sort of auxiliary discipline for astrology and astrological medicine. (shrink)

The paper presents a preliminary estimation of the extent of dissemination of optical texts, ideas, and issues among the masters connected with the Prague faculty of arts in the late 14th and early 15th century. Investigation of this topic, so far rather neglected, is based chiefly on manuscript research. The paper brings evidence that perspectiva was taught in Prague at least since the 1370s. It suggests that investigation of Prague quodlibetal disputations (ca. 1390s – 1410s) and consideration of perspectivist authorities (...) employed in these texts can also shed some light on the issue. However, the paper is mainly devoted to the question on the mechanism of vision disputed by Bohemian arts master John of Borotín (Iohannes de Borotin, 1378 – after 1458) in the quodlibet organised by John Hus in 1411. It is suggested that the single extant exemplar of the question (preserved in the codex Prague, National Library, X.H.18) probably is Borotín’s autograph. The structure and sources of the question are analysed, with the conclusion being that Borotín proposes a compromise between intromission and extramission influenced by John Peckham’s Perspectiva communis. A critical edition of Borotín’s question is appended to the paper. / / / Please note this article is published with Brepols Publishers as a Gold Open Access article under a Creative Commons CC 4.0: BY-NC license. The article is also freely available on the website of Brepols Publishers under this same license. (shrink)

L'elaborato intende analizzare lo statuto ontologico dell'ente a partire dal binomio esse e id quod est, sviluppato da Tommaso nel commento al De Hebdomadibus di Boezio, specificando i concetti di partecipazione come causalità forte, e di essere come massimo estensivo e più generale.

The methods of intellectual history have not yet been applied to studying the invention of technology for printing texts and images ca. 1375–ca. 1450. One of the several conceptual developments in this period reflecting the possibility of mechanical replication is a view of the relationship of eternity to durational time based on Gregory of Nyssa’s philosophy of time and William of Ockham’s. The article considers how changes in these ideas helped enable the conceptual possibilities of the dissemination of ideas. It (...) describes a direct connection of human perceptual knowledge to divine knowledge that enhanced the authority of printed production to transfer and reproduce the true and the good. (shrink)

This essay discusses how medieval authors from the thirteenth and fourteenth centuries dealt with a philosophical problem that social institutions pose for the Aristotelian dichotomy between natural and artificial entities. It is argued that marriage, political community, and language provided a particular challenge for the conception that things which are designed by human beings are artefacts. Medieval philosophers based their arguments for the naturalness of social institutions on the anthropological view that human beings are political animals by nature, but this (...) strategy required rethinking the borderline between nature and art. The limits of nature were extended, as social institutions were considered to be natural even though they are in many ways similar to artificial products. (shrink)

In the last several years, there has been an uptick of scholarly interest in Aristotelian theories of efficient causation. Much of this interest has focused on the late scholastic figure Francisco Suárez (1548-1617). This paper clarifies an important but neglected aspect of Suárez's theory of efficient causation—namely, his account of active causal powers. Like other Aristotelians, Suárez understands active causal powers as features that enable their subjects to perform certain sorts of actions. For example, a fire is able to heat (...) in virtue of its power or capacity for heating. However, it is not immediately clear which items in an Aristotelian ontology perform the role of an active power. The paper explains and motivates Suárez's answer to this question, and shows how this answer influences his position in a scholastic controversy about the causal roles of substantial and accidental forms in substantial change. (shrink)

This book uses the tools of analytic philosophy of disability (and Disability Studies more generally) and close readings of medieval Christian philosophical and theological texts in order to survey what these thinkers said about what today we call “disability.” The chapters also compare what these medieval authors say with modern and contemporary philosophers and theologians of disability. This dual approach enriches our understanding of the history of disability in medieval Christian philosophy and theology and opens up new avenues of research (...) for contemporary scholars working on disability. The volume is divided into three parts. Part I addresses theoretical frameworks regarding disability, particularly on questions about the definition(s) of “disability” and how disability relates to well-being. The chapters are then divided into two further parts in order to reflect ways that medieval philosophers and theologians theorized about disability. Part II is on disability in this life, and Part III is on disability in the afterlife. Taken as a whole, these chapters support two general observations. First, these philosophical theologians sometimes resist Greco-Roman ableist views by means of theological and philosophical anti-ableist arguments and counterexamples. Here we find some surprising disability-positive perspectives that are built into different accounts of a happy human life. We also find equal dignity of all human beings no matter ability or disability. Second, some of the seeds for modern and contemporary ableist views were developed in medieval Christian philosophy and theology, especially with regard to personhood and rationality, an intellectualist interpretation of the imago Dei, and the identification of human dignity with the use of reason. This volume surveys disability across a wide range of medieval Christian writers from the time of Augustine up to Francisco Suarez. It will be of interest to scholars and graduate students working in medieval philosophy and theology or disability studies. (shrink)

Pseudo-Hermes Trismegistus, On the Six Principles of Things. A Medieval World System. -/- Bilingual Latin-Spanish edition of De sex rerum principiis, with introductory study and notes by Francisco Bastitta Harriet, Valeria Andrea Buffon and María Cecilia Rusconi. -/- Bold in metaphysical assumptions and well-versed in contemporary scientific theories, the anonymous author of About the Six Principles of Things tries to develop an integral system of the universe. While invoking the ancestral authority of the legendary Egyptian sage Hermes Trismegistus, the present (...) treatise was actually written in the 12th century from various Arab and Latin sources, possibly in the School of Chartres. The previous hermetic tradition expressed a certain tension between works of a more philosophical or sapiential character, destined for intellectual elites, and other texts of a practical nature, mainly on astrology, alchemy or magic, which enjoyed less prestige among scholars. Our book clearly tries to bridge the gap between these two trends, in search for a true unification of knowledge. Not only does it present systematically the principles of the universe together with worldly prescriptions, on such matters as astrological medicine or the use of the astrolabe, but it carries this out with the aim of offering a maximum condensation of all the wisdom of its time. (shrink)

Aristotelian commenters have long noted an apparent contradiction between what Aristotle says in Posterior Analytics I.2 and Physics I.1 about how we obtain first principles of a science. At Posterior 71b35–72a6, Aristotle states that what is most universal (καθόλου) is better-known by nature and initially less-known to us, while the particular (καθ’ ἕκαστον) is initially better-known to us, but less-known by nature. At Physics 184a21-30, however, Aristotle states that we move from what is better-known to us, which is universal (καθόλου), (...) to what is better-known absolutely, which is particular (καθ’ ἕκαστον). This paper turns to two of Aristotle’s most notable medieval commentators—Albertus Magnus and Thomas Aquinas—to resolve this apparent contradiction. The key to Thomas and Albert’s solutions, we will argue, is a twofold distinction between a sense-perceptive and scientific universal, and the particulars as sensed individuals and as differentiating attributes. Our Synthetic treatment of these distinctions contributes to the ongoing scholarly effort to understand the Stagyrite’s complex theory of knowledge. (shrink)

Il volume ripercorre lo sviluppo del pensiero del giovane Nicola Cusano dalla frequentazione del maestro albertista Eimerico da Campo presso l’Università di Colonia (1425) e dal confronto con le posizioni filosofiche dei domenicani dello Studium coloniense, fino agli anni della maturità a Roma (1450). Il saggio illustra il contesto storico-culturale della genesi del De docta ignorantia, testo che suggella la presa di distanza di Cusano dal proprio passato universitario ma anche, al contempo, la sua insoddisfazione nei confronti dell’umanesimo diffuso in (...) Italia negli anni del Concilio di Ferrara-Firenze; e lo segue nella sua ‘caccia della Sapienza’, nell’incontro con differenti tradizioni e contesti, fino alla formulazione dell’ideale del ‘Socrate cristiano’ nell’Idiota. Il volume, riccamente documentato anche sul piano della storia delle interpretazioni e degli studi su Cusano, contribuisce a far luce sulla formazione del suo pensiero e sulle questioni che ne hanno segnato la vita. (shrink)

Dr. DP Singh is a prolific writer in many areas of Science, Religion and Literature. He came into my contact almost four decades back when he started his teaching career in Shivalik College, Nangal. In my note published on the blurb of this book, I wrote: " I expect his forthcoming book "Science and Sikhism: Conflict or Coherence" will prove to be a landmark in the area of Science-Religion Dialogue, with special reference to Sikh religion". I can declare without an (...) iota of doubt that DP has more than justified my claim on his book. -/- The title of the book is followed by a note "Anthology of Essays on various Concepts in Sri Guru Granth Sahib" which may be considered as a sub-title to the book. Nearly a dozen titles have appeared in the global market projecting scientific vision of Sikh Gurus enshrined in the holy pages of Sri Guru Granth Sahib but there is no rival to this volume in my view till date. The coverage of topics by DP Singh is very exhaustive. All Chapters of the book open with an appropriate quotation from Science, Religion or Literature. (shrink)

The late scholastic philosopher Francisco Suárez articulates and defends an extraordinarily detailed account of efficient causation. Some of the most interesting and difficult questions connected with this account concern the particular types of efficient causation he acknowledges. This paper clarifies one of the most fundamental distinctions Suárez employs in the course of his treatment of efficient causation—namely, that between motion or change, on the one hand, and creation ex nihilo, on the other. The paper shows that, although motion and creation (...) differ in systematic and important ways, they nevertheless can both be captured by Suárez’s general theoretical model of efficient causation. Moreover, the paper shows that creation serves as a kind of limit case of efficient causation, and accordingly that it informs how Suárez understands motion or change as well. (shrink)

Яскрава модернова обкладинка книжки, яку присвячено далеко не новій темі, обіцяє щось революційне, нестандартне. Ім’я автора, знаного науковця, живить передчуття нових джерел, нових думок, точно сформульованих і підкріплених ґрунтовною науковою аргументацією. Проте від самого початку читання виникають певні перепони, а під кінець стає зрозумілим, що нова версія життя українського філософа приховує своєрідний «гадательний» смисл, який стосується не лише Сковороди і культури XVIII ст. Мова про ставлення до традиції, пізнання й істини у ширшому сенсі. Спочатку оглянемо форму і зміст книжки. У (...) вступній частині під назвою «Prelude» на читача відразу чекають несподіванки. Розповідь про життя Григорія Сковороди, як і годиться, автор розпочинає з притчі про пустельника в «Silenus Alcibiadis», але раптом переносить нас у зовсім інший історичний світ. Тепер він розповідає про Олександра Потебню та подібність його думок і думок Сковороди. Чому книжку про філософа XVIII ст. треба починати з доведення подібності його думок до думок мислителя ХІХ ст.? Не дуже зрозуміло. Принаймні автор посилається на своє відчуття. І такий сюжетний хід мусить навіювати читачеві думки про історичну тяглість певних ідей. Серед цих ідей азначено такі: гостре відчуття богополишеності світу; панування «кривди» (с. 7); досягнення суспільної гармонії лише за умови чистоти сердець (с. 10); трактування серця як найглибшої основи людського буття (с. 10); нерозривний зв’язок пізнання речей і любові (с. 11); релігійне «підложжя» вчення обох мислителів (с.12); подібність теорії пізнання: пізнати світ можна шляхом пізнання себе і навпаки (с. 18); визнання символічності слова (с. 19); однакове розуміння структури слова і образу (с. 21); «нерівна рівність» як універсальний принцип (с. 24); «послідовний націоналізм», предтечею якого Потебня вважав Сковороду, і просвітницький пафос (с. 27). Згадка про «націоналізм» додає провокативності сюжету. А до питання про «просвітницький пафос» ми ще повернемося. Закінчує вступну частину висновок, що народ спить і його треба «розбудити». Очевидно, автор збирається пов’язати цю тему з філософією Сковороди, але не дає чітких пояснень з цього приводу. І претензій не висунеш, адже це не вступ до дисертації, а «prelude». (shrink)

In this paper, I present a categorial theory of meaning which asserts that the meaning of a sentence is the function from the actualization of some potentiality or the potentiality of some actuality to the truth of the sentence. I argue that it builds on the virtues of David Lewis’s Possible World Semantics but advances beyond problems that Lewis’s theory faces with its distinctly Aristotelian turn toward actuality and potentiality.

In his De primo et ultimo instanti, Walter Burley paid careful attention to continuity, assuming that continua included and were limited by indivisibles such as instants, points, ubi, degrees of quality, or mutata esse. In his Tractatus primus, Burley applied the logic of first and last instants to reach novel conclusions about qualities and qualitative change. At the end of his Quaestiones in libros Physicorum Aristotelis, William of Ockham used long passages from Burley’s Tractatus primus, sometimes agreeing with Burley and (...) sometimes disagreeing. How may this interaction between Burley and Ockham be understood within its historical context? (shrink)

Anthony J. Lisska presents a new analysis of Thomas Aquinas's theory of perception. While much work has been undertaken on Aquinas's texts, little has been devoted principally to his theory of perception and less still on a discussion of inner sense. The thesis of intentionality serves as the philosophical backdrop of this analysis while incorporating insights from Brentano and from recent scholarship. The principal thrust is on the importance of inner sense, a much-overlooked area of Aquinas's philosophy of mind, with (...) special reference to the vis cogitativa. Approaching the texts of Aquinas from contemporary analytic philosophy, Lisska suggests a modest 'innate' or 'structured' interpretation for the role of this inner sense faculty. He argues that were it not for the vis cogitativa, Aquinas would be unable to account for an awareness of the principal ontological category in his metaphysics. (shrink)

In this paper, I analyze William Crathorn’s view on extension and compare it to William Ockham’s reductionist view, according to which extension is not really distinct from substance or quality. In my view, Crathorn elaborates a metaphysical machinery based on mereological and topological relationships in order to solve what he considers to be problems in Ockham’s account of quantity. In order to make my point, I reconstruct Crathorn’s main arguments in favor of his finitist atomism. Crathorn claims that certain fundamental (...) spatial structures are of a mereological nature and that the mereological properties of located entities perfectly match those of their locations. This idea lies at the core of his solution to the paradox of touching and the metrical paradox. It allows him to redefine contiguity in such a way that extensionless magnitudes can touch and succeed each other. Crathorn goes one step further and claims that indivisibles are extended in the sense that they occupy an extended incorporeal space, which is their dimension. In this sense, they can come together to form a continuous magnitude. Thus, Crathorn succeeds in defining a concept of continuity that is compatible with his finitist atomism and that addresses what he takes to be a major weakness in Ockham’s view on extension, namely a murky concept of impenetrability. (shrink)

This paper examines an important but neglected topic in Suárez’s metaphysics–—namely, his theory of efficient causation. According to Suárez, efficient causation is to be identified with action, one of Aristotle’s ten highest genera or categories. The paper shows how Suárez’s identification of efficient causation with action helps to shed light on his views about the precise nature of efficient causation, and its role in his ontology. More specifically, it shows that Suárez understands efficient causation to be a distinctive or sui (...) generis type of entity, and that he thinks we must adopt this view in order to account for the facts of efficient causation. The paper also examines several objections to Suárez’s account. (shrink)

This the original Arabic text of three philosophical questions raised by Tusi (1201–1274) in his letter to Khusrawshahi (1184-1254). These critical questions are related to three main fields of philosophy: Philosophy of Nature, Philosophical Psychology (or Philosophy of the Soul) and Philosophical Theology which is traditionally subsumed as one of the proper subtopics of Metaphysics. Although Tusi did not receive any recorded response from Khusrawshahi, his short letter attracted considerable scholarly attention and received some remarkable responses, in later Islamic philosophy (...) and thus provided an exemplar of the traditional technique of debating by way of “question-answer” correspondence. (shrink)

The geometrical elements in the architecture of Lincoln Cathedral, in the vaulting and elevations, can be compared to the geometries described by Robert Grosseteste in his cosmologies. The architecture can be read as a catechism of the cosmologies. The geometries appear in the cathedral for the first time in the history of architecture to explain the generation, emanation, reflection, refraction and rarefaction of light as it forms the material world. The proposition is that the geometries of the architecture of Lincoln (...) Cathedral can be understood in relation to the geometries which are the basis of the cosmologies of Robert Grosseteste, Bishop of Lincoln 1235–53, in particular De lineis, angulis et figuris, and De luce. Many of the architectural forms at Lincoln Cathedral are unprecedented in their appearance or use, and they form the basic vocabulary for the entire development of English Gothic architecture. Their radically new appearance has never been adequately explained. Vocabulary elements such as the ridge pole, tierceron or non-structural rib, lierne or segmented ridge rib, flying rib, conoid springer vault or cone of ribs rising from the springer pole in the elevation, triradial vaulting or three ribs meeting at the ridge pole, double syncopated or overlapping arcading, and the bundled and ribbed umbrella column, all originate in some form or are developed for the first time in Lincoln. All of the geometries which appear for the first time in the architecture appear in the cosmologies of Grosseteste, for the purpose of explaining the generation, emanation, reflection, refraction, and rarefaction of light as it forms the material world in geometrical configurations. The cathedral would thus be a catechism of the geometrical substructure of the physical world, in the tradition of the Timaeus of Plato. There is no evidence that the concepts were dictated by Grosseteste directly to masons, but it is well known that such concepts permeated medieval architecture and city planning, and that they were filtered down through all trades involved in construction of the city and the cathedral. Grosseteste’s cosmologies represent a core achievement of Scholasticism, the synthesis of classical philosophy and Catholic theology, which is embodied in the architecture of the cathedral. (shrink)

This chapter present a glimpse of medieval academic discussions concerning sense perception, which had by the end of the Middle Ages gained a prominent position as a major element of Aristotelian psychology.

In the corollaries to Book I, Chapter 5 of De causa Dei, Thomas Bradwardine assumes the existence of an actual, infinite, God-filled extramundane void. Thomas Buckingham, Bradwardine’s former student, develops in the unedited Question 23 of his Quaestiones theologicae a rejection of the void’s existence precisely in opposition to the theory of his master. His argumentation is not only remarkable in its own; it also allows us to reassess essential concepts from Bradwardine’s De causa Dei, such as divine power, causality (...) and ubiquity. This paper first presents the Aristotelian notion of the void in rendering it in the context of the philosophy of nature at fourteenth-century Oxford; it is then dedicated to the analysis of the chapter in question from De causa Dei along with Buckingham’s answer. It is accompanied by a critical edition of Question 23 from Buckingham’s Quaestiones theologicae, »Utrum sit necesse ponere Deum esse extra mundum in situ seu vacuo imaginario infinito«. (shrink)

In Aquinas's account of the beatific vision, human beings are joined to God in a never-ending act of contemplation of the divine essence: a state which utterly fulfills the human drive for knowledge and satisfies every desire of the human heart. In this paper, I argue that this state represents less a fulfillment of human nature, however, than a transcendence of that nature. Furthermore, what’s transcended is not incidental on a metaphysical, epistemological, or moral level.

n his Problemata, Aristotle provided medieval thinkers with the occasion to inquire into the natural causes of the sexual desires of men to act upon or be acted upon by other men, thus bringing human sexuality into the purview of natural philosophers, whose aim it was to explain the causes of objects and events in nature. With this philosophical justification, some late medieval intellectuals asked whether such dispositions might arise from anatomy or from the psychological processes of habit formation. As (...) the fourteenth-century philosopher Walter Burley observed, "Nothing natural is shameful." The authors, scribes, and readers willing to "contemplate base things" never argued that they were not vile, but most did share the conviction that they could be explained. From the evidence that has survived in manuscripts of and related to the Problemata, two narratives emerge: a chronicle of the earnest attempts of medieval medical theorists and natural philosophers to understand the cause of homosexual desires and pleasures in terms of natural processes, and an ongoing debate as to whether the sciences were equipped or permitted to deal with such subjects at all. Mining hundreds of texts and deciphering commentaries, indices, abbreviations, and marginalia, Joan Cadden shows how European scholars deployed a standard set of philosophical tools and a variety of rhetorical strategies to produce scientific approaches to sodomy. (shrink)

The Physics is a most remarkable work, and profoundly influenced Medieval Philosophers. Thomas Aquinas wrote a detailed, impressive commentary. This essay studies in particular the composition of the Physics as Thomas saw it, his thorough study of Aristotle’s way of arguing and the important distinction he made between disputative arguments, which are only partially true, and arguments which determine the truth. Aristotle frequently uses proofs which are wrong when one considers the proper nature of bodies, but possible considering their common (...) nature. Thomas accepts proofs in the field of physics but discards those related to a certain mathematization of nature. Aristotle holds the unlimited possibility of movements becoming faster or slower, but according to Aquinas he is considering things in general : when we consider specific bodies there is a fastest movement. Thomas speaks of a way of reading a text which is according the intention of Aristotle, and proposes an understanding of particular texts based on the general doctrine of the Stagirite. Sometimes he goes beyond the text, as when defending the unity of time as dependent on the unity of the First Mover. The essay shows that in the commentary a coherent philosophy of nature shaping up. In some places Aquinas brings in God’s causality: nature is nothing else but the plan of divine art, placed within things. The study of nature shows that there is a first principle of the whole nature which is above everything, sc. God who gives being to things. (shrink)

La vita e le opere di Landolfo Caracciolo O.F.M. sono state descritte in modo sistematico da Salerno.1 Rispetto a questa descrizione, che ha posto il bacellierato sentenziario di Caracciolo intorno al 1320, va assunta la ricostruzione di Schabel, che ha spiegato come Caracciolo abbia letto le Sententiae a Parigi dopo Pietro Aureolo e prima di Francesco d’Ascoli e Francesco di Meyronnes.2 Successivamente Landolfo avrebbe ricevuto la prima cattedra in teologia dello Studium fran-cescano di Napoli, inaugurandovi la tradizione scotista.3Landolfo fu ministro (...) provinciale della Terra di Lavoro e svolse parecchie missioni diplomatiche per conto della regina Giovanna I di Napoli. Nel 1327 fu designato vescovo di.. (shrink)

In a living body, the substantial form, the essence, and the soul play very similar, but non-identical, metaphysical roles. This article explores the similarities and differences to clarify basic points of Thomistic metaphysics.

This paper presents a philosophical argument for divine providence by Aquinas. I suggest that upon returning to Aristotle’s Physics and Metaphysics to prepare his commentaries on these texts, Aquinas recognized that his stock argument from natural teleology to divine providence (the fifth way and its versions) needed to be filled out. Arguments from natural teleology can prove that God’s providence extends to what happens for the most part, but they cannot show that God’s providence also includes what happens for the (...) least part. In order to prove the latter, Aquinas claims that one must argue from a higher science, which he then does with all characteristic clarity. This paper presents this argument, discusses what this means for his previous arguments from teleology, and discusses the argument’s relevance to the contemporary discussion about creation and evolution. (shrink)

This paper argues that Nicholas of Cusa’s investigation of infinity and incommensurability in De docta ignorantia was shaped by the mathematical innovations and thought experiments of fourteenth-century natural philosophy. Cusanus scholarship has overlooked this influence, in part because Raymond Klibansky’s influential edition of De docta ignorantia situated Cusa within the medieval Platonic tradition. However, Cusa departs from this tradition in a number of ways. His willingness to engage incommensurability and to compare different magnitudes of infinity distinguishes him from his Platonic (...) predecessors, who had appropriated the Pythagorean model of universal harmonies. Cusa’s penchant for representing quantity geometrically suggests not only that he has adopted the fourteenth-century method of latitude measurement, but that he accepts incommensurability as normative. Finally, Cusa’s persistent attention to mathematical inaccuracy and to his own learned ignorance suggests his kinship with the meta-critical, conjectural quality of fourteenth-century thought. (shrink)

Alchemical images take many forms, from descriptive illustrations of apparatus to complex allegorical schemes that link practical operations to larger cosmological structures. I argue that George Ripley’s famous Compound of Alchemy (1471) was intended to be read in light of a circular figure appended to the work: the Wheel. In the concentric circles of his “lower Astronomy,” Ripley provided a terrestrial analogue for the planetary spheres: encoding his alchemical ingredients as planets that orbited the earthly elements at the core of (...) the work. The figure alludes to a variety of late medieval alchemical doctrines. Yet the complexity of Ripley’s scheme sometimes frustrated later readers, whose struggles to decode and transcribe the figure left their mark in print and manuscript. (shrink)

The Ruland family was perhaps the most famous clan involved in alchemy and medicine in early modern Central and Eastern Europe. Yet while more prominent members of the family, such as Martin Ruland Junior, participated in the alchemical milieu at the court of Rudolf II in Prague, other members, farther from the centre of Empire, are also significant to the study of interconnections between early modern alchemy, science, and medicine. A case in point is the misunderstood figure of Johann David (...) Ruland, who plied his trade in the territories of Royal Hungary. His major publication, the Pharmacopoea nova, introduced the rudiments of his “filth-pharmacy” : the use of bodily waste to cure and heal certain afflictions. Yet in the secondary literature, Johann David’s life and work have often been confused with the activities of his uncle, Johann Ruland. The present biographical study of both Johann and Johann David seeks to disentangle their respective intellectual legacies, allowing us the opportunity to resituate both men within their respective medical and alchemical contexts. (shrink)

La solution de Thomas d’Aquin au problème de l’intensification des qualités souffre d’une certaine instabilité et, dans la génération suivante, a été disloquée par les différentes contraintes qu’elle tentait de concilier. Cet article explore les réponses apportées par Gilles de Rome, Godefroid de Fontaines, Pierre d’Auvergne et Thomas de Sutton. Introduite par Godefroid, mais développée par Sutton, la notion de mode va jouer un rôle très important. La solution de Sutton, particulièrement, invite à une comparaison avec la théorie des modes (...) intrinsèques chez Duns Scot. (shrink)

Georgius Trapezuntius Cretensis (or George of Trebizond) (1396-1472), an eminent humanist scholar who immigrated to Italy from Crete, is well appreciated for his translations, commentaries and treatises on philosophy, rhetoric and science. While there is a good deal of scholarship on Byzantine scholars in the Italian Renaissance, the topic of their contribution to mathematics and science in general has not to date been thoroughly addressed. This paper purports to fill this lacuna. On the basis of major evidence, I will attempt (...) to show the way Trapezuntius treated mathematics and physical sciences in order to serve his personal goals in the mid 15th century. (shrink)