Summary By means of examples drawn from everyday experience, the author investigates what conditions must be satisfied in order that behaviour may be called rational or irrational. Does the attribution of irrationality apply to means or to ends? Is it based on consideration of the total cost? Is heroism irrational? Cannot what is irrational for one person be rational for another? Finally, the author uses this approach to come to the problem of induction and to that of moral freedom.RésuméL'auteur examine, (...) à l'aide d'exemples divers tiréds de l'expérience quotidienne, quelles sont les conditions qui doivent ětre remplies pour qu'on puisse qualifier une conduite de rationnelle ou d'irrationnelle. L'imputation d'irrationalité concerne‐t‐elle les moyens ou les buts? Se fonde‐t‐elle sur une estimation globale des coǔts? L'héroïsme est‐il irrationnel? Ce qui est irrationnel pour l'un ne peut‐il pas ětre rationnel pour un autre? Enfin, il aborde par ce biais le problème de l'induction et celui de la liberté morale.ZusammenfassungDer Verfasser untersucht aufgrund verschiedener aus dem Alltag gezogenen Beispiele die Frage, welches die Bedingungen sind, die erfüllt sein müssen, damit man ein Verhalten als rational bezeichnen kann. Bezieht sich das Zuschreiben von Irrationalität auf Mittel oder auf Ziele? Ist es auf der Einschätzung des Aufwandes begründet? Ist Heldentum irrational? Kann das, was dem einen als irrational gilt, einem andern nicht als rational gelten? Schliesslich wird über das Induktionsproblem das Problem der moralischen Freiheit angegangen. (shrink)

The volume documents, and makes an original contribution to, an astonishing period in twentieth-century philosophy—the progress of Arne Naess's ecophilosophy from its inception to the present. It includes Naess's most crucial polemics with leading thinkers, drawn from sources as diverse as scholarly articles, correspondence, TV interviews and unpublished exchanges. The book testifies to the skeptical and self-correcting aspects of Naess's vision, which has deepened and broadened to include third world and feminist perspectives. Philosophical Dialogues is an essential addition to the (...) literature on environmental philosophy. (shrink)

A. J. Ayer was one of the foremost analytical philosophers of the twentieth century, and was known as a brilliant and engaging speaker. In essays based on his influential Dewey Lectures, Ayer addresses some of the most critical and controversial questions in epistemology and the philosophy of science, examining the nature of inductive reasoning and grappling with the issues that most concerned him as a philosopher. This edition contains revised and expanded versions of the lectures and two additional (...) essays. Ayer begins by considering Hume's formulation of the problem of induction and then explores the inferences on which we base our beliefs in factual matters. In other essays, he defines the three kinds of probability that inform inductive reasoning and examines the various criteria for verifiability and falsifiability. In his extensive introduction, Graham Macdonald discusses the arguments in _Probability and Evidence_, how they relate to Ayer's other works, and their influence in contemporary philosophy. He also provides a brief biographical sketch of Ayer, and includes a bibliography of works about and in response to _Probability and Evidence_. (shrink)

In _Probability and Evidence_, one of Britain's foremost twentieth-century philosophers addresses central questions in the theory of knowledge and the philosophy of science. This book contains A.J. Ayer's John Dewey Lectures delivered at Columbia University, together with two additional essays, "Has Harrod Answered Hume?" and "The Problem of Conditionals.".

Hume is one of the greatest of all British philosophers, and even in his own lifetime was celebrated as one of the pivotal figures of the Enlightenment. A central theme of his philosophy is the conviction that questions traditionally thought of as completely independent of the scientific realm--questions about the mind, about morality, and about God, for example--are actually best explained using the experimental methods characteristic of the natural sciences. Hume's 'naturalist' approach to a wide variety of philosophical topics resulted (...) in highly original theories about perception, self-identity, causation, morality, politics, and religion, all of which are discussed in this stimulating introduction by A J Ayer, himself one of the twentieth century's most important philosophers. Ayer also gives an account of Hume's fascinating life and character, and includes generous quotations from Hume's lucid and often witty writings. (shrink)

Hume is one of the greatest of all British philosophers, and even in his own lifetime was celebrated as one of the pivotal figures of the Enlightenment. Hume's 'naturalist' approach to a wide variety of philosophical topics resulted in highly original theories about perception, self-identity, causation, morality, politics, and religion, all of which are discussed in this stimulating introduction by A J Ayer, himself one of the twentieth century's most important philosophers. Ayer also gives an account of Hume's (...) fascinating life and character, and includes generous quotations from Hume's lucid and often witty writings. (shrink)

El editor reúne a distintos miembros de la Advisory Council of the British Humanist Association para escribir sobre conceptos, tales como la moralidad, la educación moral, la ética, los medios de comunicación, la muerte o el futuro. Algunos de estos autores son: Cyril Bibby, Raymond Firth, Margaret Knight, Lord Francis Williams, Antony Flew, Peter Henderson, James Hemming, Morris Ginsberg, Lord Ritchie-Calder, Lord Boyd Orr, Kathleen Nott, Brigid Brophy, Cristopher Longuet-Higgins, Kingsley Martin, P. Sargant Florence, Theodore Besterman, F.A.E. Crew, H.J. Eysenck (...) o Sir Karl Popper. (shrink)

Dialogues with British philosophers (A.J. Ayer and others) first broadcast on BBC radio, winter 1970-71.

Alfred Jules Ayer zählt aufgrund seines Frühwerks Language, Truth and Logic zu den Gründungsfiguren des Logischen Positivismus. Ayers Eltern gehörten dem gehobenen Bürgertum an: Sein aus der Schweiz stammender Vater Jules Ayer arbeitete etwa als Privatsekretär des Bankiers Alfred Rothschild und seine aus den Niederlanden emigrierte Mutter Reine Citroën war die Nichte des gleichnamigen Autoherstellers. Dies ermöglichte Ayer eine erstklassige britische Ausbildung.

After an exposition of some key concepts in scholastic ontology, this paper examines four arguments presented by Francisco Suarez for the thesis, commonly held by Christian Aristotelians, that God's causal contribution to effects occurring in the ordinary course of nature goes beyond His merely conserving created substances along with their active and passive causal powers. The postulation of a further causal contribution, known as God's general concurrence (or general concourse), can be viewed as an attempt to accommodate an element of (...) truth present in occasionalist accounts of divine causality. (shrink)

This paper attempts to construct a systematic and plausible account of the necessity of the past. The account proposed is meant to explicate the central ockhamistic thesis of the primacy of the pure present and to vindicate Ockham's own non-Aristotelian response to the challenge of logical determinism.

Central to the western theistic understanding of divine providence is the conviction that God is the sovereign Lord of nature. He created the physical universe and continually conserves it in existence. What's more, He is always and everywhere active in it by His power. The operations of nature, be they minute or catastrophic, commonplace or unprecedented, are the work of His hands, and without His constant causal influence none of them would or could occur.

My topic is God's activity in the ordinary course of nature. The precise mode of this activity has been the subject of prolonged debates within every major theistic intellectual tradition, though it is within the Catholic tradition that the discussion has been carried on with the most philosophical sophistication. The problem, in its simplest form, is this: Given the fundamental theistic tenet that God is the provident Lord of nature, the First Efficient Cause who creates the universe, sustains it in (...) being, and exists in all things by His essence, presence, and power,1 how exactly do the actions of secondary (i.e., created) causes fit in with God's own activity in the ordinary course of nature? Or, to put it a bit more neutrally, how exactly is God's own action as the First Cause in nature related to the causal activity, if any , of His creatures? (shrink)

These original essays offer evidence that a growing number of Anglo-American philosophers are finding in the classical discussion of God's existence and nature fertile sources for critical reflection on issues in the philosophy of religion. Nelson Pike challenges Aquinas' claim that God is not responsible for evil and shows how the rejection of this claim bears on the problem of evil. Richard Swinburne defends the classical Christian understanding of heaven and hell, arguing that it is both philosophically plausible and compatible (...) with the Christian conception of God's goodness. Philip Quinn proposes a defensible version of the classical assertion that God's conserving a creature in existence is tantamount to his continuously creating that creature. Thomas Flint and Alfred Freddoso present an analysis of omnipotence which they claim to be both philosophically adequate and consonant with the orthodox Christian belief that God is both omnipotent and incapable of sinning. James Ross's main purpose is to dislodge the assumption that God's power is properly and adequately thought of as the power to cause (or bring about or actualize) states of affairs. Clement Dore reinterprets and defends Descartes' often maligned Fifth Meditation argument for God's existence. Finally, Mark Jordan explicates the metaphysical foundations of Aquinas' doctrine of divine names. (shrink)

Luis de Molina was a leading figure in the remarkable sixteenth-century revival of Scholasticism on the Iberian peninsula.

According to the Christian doctrine of the Incarnation, the Son of God is truly but only contingently a human being. But is it also the case that Christ’s individual human nature is only contingently united to a divine person? The affirmative answer to this question, explicitly espoused by Duns Scotus and William of Ockham, turns out to be philosophically untenable, while the negative answer, which is arguably implicit in St. Thomas Aquinas, explication of the Incarnation, has some surprising and significant (...) metaphysical consequences. (shrink)

The ArgumentThe question posed by this paper is why the Russian autocracy failed to pursue successfully Peter the Great's conscious policy of creating a society dominated by technique and competitive with technological levels achieved by Western Europe. The brief answer is that Peter's idea of a cultural revolution that would create new values and institutions hospitable to the introduction of technology clashed with powerful interests within society. The political opposition centered around three groups which were indispensable to the state in (...) fulfilling his vision: the nobility, the clergy, and the scientific establishment. Peter's original intention was to combine theoretical models and technology transfer from the West with educational reforms in Russia to produce new cadres of technical specialists. He attempted to adapt the Leibniz-Wolff cosmology to Russian conditions in order to reconcile ideological conflicts between military service and technical training, science and religion, theory and practice. The embodiment of his ideas in Russian science and religion were Mikhail Lomonosov and Feofan Prokopovich. Under his successors Peter's supporters encountered increased resistance: from the nobility to technical education, from the clergy to the scientific outlook, and from the Academy of Sciences to practical work. All three interest groups were willing to sacrifice real political rights for a recognition by the states of their autonomy to define their social roles. In the end the compromise was effected at the expense of Peter's ideal of the society dominated by technique. (shrink)

This paper lays out the main contours of an objectivistic account of natural necessity that locates its source within natural substances themselves. The key claims are that what occurs by a necessity of nature constitutes the culmination of deterministic natural tendencies and that these tendencies are themselves rooted in the natures or essences of natural substances. The paper concludes by discussing the notion of a law of nature as it emerges on this account.

In the Logica Ingredientibus Abailard attacks the theory according to which universals are collections of individuals. This paper argues that Abailard's principal objection to this 'collective realism', viz, that it conflates universals with integral wholes, is actually quite strong, though it is generally overlooked by recent commentators. For implicit in this objection is the claim that the collective realist cannot provide a satisfactory account of predication. The reason for this is that integral wholes are not uniquely decomposable. In support of (...) thesis the author first explicates the medieval distinction between integral and subjective parts and then discusses its application to collective realism. (shrink)

The thesis of this paper is that an agent S has the power to bring it about that a proposition p is or will be true at a moment t only if S has at the same time the power to bring it about that it has always been the case that p would be true at t. The author first constructs a prima facie compelling argument for logical determinism and then argues that whoever accepts an Ockhamistic response to that (...) argument should also accept the above thesis. (shrink)

Let me begin somewhat perversely by making clear what I do not intend to do in this paper. I do not propose to offer a general defense of Ockham's resolution of the metaphysical perplexities engendered by the dogma of the Incarnation. In fact, I have argued elsewhere that his account of the hypostatic union is seriously deficient. 1..

Born in England and educated at Oxford, Ockham was the preeminent Franciscan thinker of the mid-fourteenth century. Because of his role in the bitter dispute between the Franciscans and Pope John XXII over evangelical poverty, he was excommunicated in 1328. After that he abandoned philosophy and theology proper, producing instead a series of political tracts on the ecclesiastical and secular power of the papacy.

This paper takes the first steps in the construction of a theory of event identity as that theory applies to historical sentences. The theory is extensional throughout. Following statements of criteria of adequacy for the construction, Davidson's method of regimenting sentences is adopted in order to allow for variables ranging over events. Events in this theory are only partially construed, that is, to the extent of treating them as concrete individuals rather than as classes or repeatable universals. The paper concludes (...) with a statement of several theorems and definitions and an example of how the theory works. (shrink)

This 1982 book is a history of the great age of scholastism from Abelard to the rejection of Aristotelianism in the Renaissance, combining the highest standards of medieval scholarship with a respect for the interests and insights of contemporary philosophers, particularly those working in the analytic tradition. The volume follows on chronologically from The Cambridge History of Later Greek and Early Medieval Philosophy, though it does not continue the histories of Greek and Islamic philosophy but concentrates on the Latin Christian (...) West. Unlike other histories of medieval philosophy that divide the subject matter by individual thinkers, it emphasises the parts of more historical and theological interest. This volume is organised by those topics in which recent philosophy has made the greatest progress. (shrink)