Ruth Glasner presents an illuminating reappraisal of Averroes' physics.

Scholasticism, with its intense rational method and its fervent intellectual spirit, virtually disappeared from the general consideration of Natural Philosophy at the coming of the Reformation and the subsequent Newtonian Revolution. Only in this century has it seemed to merit any reconsideration.

R. Saadia Ga'on, which is known to have been substantially influenced by Saadia, in fine is also indebted to Stoic philosophy and physics.

R. Saadia Ga'on (882–942) de Baghdad tâchait d'éviter l'anthropomorphisme en avançant que les versets bibliques qui semblent attribuer des traits matériels à Dieu portent non sur Dieu Lui-même, mais sur une entité créée, la Gloire de Dieu, que Saadia décrivait comme un “air” extrêmement subtil. Cet article s'efforce de montrer que la conception saadienne d'un air quasi divin, par lequel Dieu accomplit Ses actes dans le monde matériel, est redevable à la doctrine stoïcienne dupneuma. Il s'ensuit que la théologie immanentiste (...) desḤasidey Ashkenaz(Piétistes allemands), que l'on sait avoir été trés influencée par Saadia, est un prolongement lointain de la philosophic et de la physique stoïciennes. (shrink)

An unaltered reprint of the K. Paul, French and Co. edition of 1882, translated, introduced and annotated by W. Ogle.

"Although the end be last in the order of execution, yet it is first in the order of intention." This dictum arises in Aquinas's discussion of human acts; it nonetheless comes readily to the mind of readers of Helen Lang's book. Lang's thesis is that in the Physics Aristotle wrote logoi, arguments structured around an initial thesis. This structure is seen across the books of the Physics and provides a framework in which to understand the various parts of (...) Aristotle's science of nature. Lang maintains that Aristotle's Physics establishes his science of nature, and that all logoi of the work address difficulties surrounding the scope of the subject of this science. One ought not understand the arguments in terms of the Physics as a whole; rather, each argument is to be seen in relation to the logos of which it is a part. Lang provides careful study of the arguments comprising books 2, 7, and 8, and concludes that each logos falls under an initially stated thesis. (shrink)

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)

One defining feature of the Hindu religious worldviews is a belief in the impermanence of the body and its perception as a source of suffering due to a misguided attachment of the self to its corporeal manifestation. This view is expressed in several important traditions, including classical yoga, which perceives the physical body as an impediment to attaining liberation and irrelevant in the state of liberation.However, the perception of the physical body in liberation is going through ontological changes in early (...) medieval Haṭhayoga texts. The dichotomy between embodied and disembodied states of the body when one is liberated is the focus of this article. In several medieval yoga texts dating between the eleventh and the fifteenth centuries, the ontological immortal state of living liberation is more similar to physical death. Often the exact text holds both views of embodied and disembodied states simultaneously with no overt inconsistency. I argue that these tensions and contradictions can be explained in two ways: by looking at the assessed timeline of the texts and by reflecting on their sectarian and social origin. (shrink)

These selections from Le système du monde, the classic ten-volume history of the physical sciences written by the great French physicist Pierre Duhem (1861-1916), focus on cosmology, Duhem's greatest interest. By reconsidering the work of such Arab and Christian scholars as Averroes, Avicenna, Gregory of Rimini, Albert of Saxony, Nicole Oresme, Duns Scotus, and William of Occam, Duhem demonstrated the sophistication of medieval science and cosmology.

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)

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)

Sir Anthony Kenny here continues his fascinating account of the history of philosophy, focusing on the thousand-year-long medieval period. This is the second volume of a four-book set in which Kenny will unfold a magisterial new history of Western philosophy, the first major single-author history of philosophy to appear in decades. In this volume, Kenny takes us on a fascinating tour through more than a millennium of thought from 400 AD onwards, charting the story of philosophy from the founders (...) of Christian and Islamic thought through to the Renaissance. The Middle Ages saw a great flourishing of philosophy, and the intellectual endeavor of the era reaches its climax in the thirteenth and fourteenth centuries, with the systems of the great schoolmen such as Thomas Aquinas and John Duns Scotus. With Kenny as guide, we see these major philosophers through the eyes of a man who has spent a lifetime contemplating their work. Thus we do not simply get an overview of philosophy, but also a penetrating and insightful critique of it. Kenny offers an illuminating account of various thinkers and schools of thought, from Augustine to Maimonides and from Grosseteste to Pomponazzi. And he offers much insight into medieval thinking about logic and language, knowledge, physics, metaphysics, the mind, the soul, and God. Vividly written, but serious and deep enough to offer a genuine understanding of the great philosophers, Kenny's lucid and stimulating history will become the definitive work for anyone interested in the people and ideas that shaped the course of Western thought. (shrink)

This book on medieval and early modern corpuscular matter theories presents the research results of nineteen scholars, who show that his modern model of matter has some of its roots in physical, medical, mathematical, alchemical, and theological conceptions developed in the Middle Ages.

did roger bacon and peter john olivi ever meet? We suggest a positive answer to this question. After he became a Franciscan in 1257, Roger Bacon spent ten years at the Franciscan Paris convent. In those years he wrote the De multiplicatione specierum —his most thought-out piece—the Opus majus, Opus minus, and Opus tertium, which he completed by early 1268. It is not clear whether Bacon returned to England after 1268, or remained in Paris until 1280.1 Peter John Olivi wrote (...) the Summa questions in several phases.2 According to Sylvain Piron's chronology, Olivi's questions on Physics should be dated before 1270, and his theory of... (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.

The epistemological views of medieval philosophers Augustine, Thomas Aquinas, and William of Ockham are considered in turn. First, Augustine’s refutation of skepticism from the Contra Academicos and his positive account of knowing Divine Ideas from the De Magistro are outlined, after which there is a brief discussion of his Vital Attention theory of sensation. Second, Aquinas’s account of self-evident propositions, sensation, concept formation, knowledge of singulars, and self-knowledge from the Summa Theologiae is covered. Third, Ockham’s picture of scientific knowledge (...) from his Commentary on Aristotle’s Physics is followed by an examination of his theories concerning evidentness, intuitive cognition, and abstractive cognition from his Ordinatio. (shrink)

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.

This volume deals with the reception of Aristotle's natural philosophy in Oxford between 1250 and 1270.

Medieval interpretations of hylomorphism, in which substances are conceived as metaphysical composites of prime matter and substantial form, are receiving attention in contemporary philosophy. It has even been suggested that a recovery of Aquinas's conception of prime matter as a ‘pure potentiality’, lacking any actuality apart from substantial form, may be expedient in hylomorphic interpretations of quantum mechanics. In this paper, we consider a recent hylomorphic interpretation of non-relativistic quantum mechanics, the theory of Cosmic Hylomorphism, which does not explicitly (...) invoke any notion of prime matter in its original formulation. We argue that prime matter does in fact play a role in constituting and individuating particles in this theory. However, we demonstrate that the notion of prime matter which features in the extended version of Cosmic Hylomorphism that we propose here is distinct from Aquinas's conception of prime matter, inasmuch as it has discrete metaphysical parts. (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)

These selections from _Le système du monde_, the classic ten-volume history of the physical sciences written by the great French physicist Pierre Duhem, focus on cosmology, Duhem's greatest interest. By reconsidering the work of such Arab and Christian scholars as Averroes, Avicenna, Gregory of Rimini, Albert of Saxony, Nicole Oresme, Duns Scotus, and William of Occam, Duhem demonstrated the sophistication of medieval science and cosmology.

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)