Aristotle S Theory Of Bodies

Christian Pfeiffer explores an important, but neglected topic in Aristotle's theoretical philosophy: the theory of bodies. A body is a three-dimensionally extended and continuous magnitude bounded by surfaces. This notion is distinct from the notion of a perceptible or physical substance. Substances have bodies, that is to say, they are extended, their parts are continuous with each other and they have boundaries, which demarcate them from their surroundings. Pfeiffer argues that body, thus understood, has a pivotal role in Aristotle's natural philosophy. A theory of body is a presupposed in, e.g., Aristotle's account of the infinite, place, or action and passion, because their being bodies explains why things have a location or how they can act upon each other. The notion of body can be ranked among the central concepts for natural science which are discussed in Physics III-IV. The book is the first comprehensive and rigorous account of the features substances have in virtue of being bodies. It provides an analysis of the concept of three-dimensional magnitude and related notions like boundary, extension, contact, continuity, often comparing it to modern conceptions of it. Both the structural features and the ontological status of body is discussed. This makes it significant for scholars working on contemporary metaphysics and mereology because the concept of a material object is intimately tied to its spatial or topological properties.

Christian Pfeiffer presents the first full account of Aristotle's theory of bodies, the perceptible, extended, and demarcated substances that are the subject-matter of physical science. He shows that many parts of Aristotle's metaphysics and natural philosophy presuppose a general theory of body.

This book presents a recasting of Aristotle’s theory of spatial displacement of inanimate objects. Aristotle’s claim that projectiles are actively carried by the media through which they move (such as air or water) is well known and has drawn the attention of commentators from ancient to modern times. What is lacking, however, is a systematic investigation of the consequences of his suggestion that the medium always acts as the direct instrument of locomotion, be it natural or forced, while original movers (e.g. stone throwers, catapults, bowstrings) act indirectly by impressing moving force into the medium. Filling this gap and guided by discussions in Aristotle’s Physics and On the Heavens, the present volume shows that Aristotle’s active medium enables his theory - in which force is proportional to speed - to account for a large class of phenomena that Newtonian dynamics - in which force is proportional to acceleration - accounts for through the concept of inertia. By applying Aristotle’s medium dynamics to projectile flight and to collisions that involve reversal of motion, the book provides detailed examples of the efficacy and coherence that the active medium gives to Aristotle’s discussions. The book is directed primarily to historians of ancient, medieval, and early modern science, to philosophers of science and to students of Aristotle’s natural philosophy.

Aristotle initiated the systematic investigation of perception, the emotions, memory, desire and action, developing his own account of these phenomena and their interconnection. The aim of this book is to gain a philosophical understanding of his views and to examine how far they withstand critical scrutiny. Aristotle's account, it is argued, constitutes a philosophically live alternative to conventional post-Cartesian thinking about psychological phenomena and their place in a material world. It offers a way to dissolve, rather than solve, the mind-body problem we have inherited.

In this timeless and profound inquiry, Aristotle presents a view of the psyche that avoids the simplifications both of the materialists and those who believe in the soul as something quite distinct from body. On the Soul also includes Aristotle's idiosyncratic and influential account of light and colors. On Memory and Recollection continues the investigation of some of the topics introduced in On the Soul. Sachs's fresh and jargon-free approach to the translation of Aristotle, his lively and insightful introduction, and his notes and glossaries, all bring out the continuing relevance of Aristotle's thought to biological and philosophical questions.

Exploration of Aristotle's philosophy of nature in the light of scholarly insights.

Aristotle is considered by many to be the founder of 'faculty psychology'—the attempt to explain a variety of psychological phenomena by reference to a few inborn capacities. In The Powers of Aristotle's Soul, Thomas Kjeller Johansen investigates his main work on psychology, the De Anima, from this perspective. He shows how Aristotle conceives of the soul's capacities and how he uses them to account for the souls of living beings. Johansen offers an original account of how Aristotle defines the capacities in relation to their activities and proper objects, and considers the relationship of the body to the definition of the soul's capacities. Against the background of Aristotle's theory of science, Johansen argues that the capacities of the soul serve as causal principles in the explanation of the various life forms. He develops detailed readings of Aristotle's treatment of nutrition, perception, and intellect, which show the soul's various roles as formal, final and efficient causes, and argues that the so-called 'agent' intellect falls outside the scope of Aristotle's natural scientific approach to the soul. Other psychological activities, various kinds of perception (including 'perceiving that we perceive'), memory, imagination, are accounted for in their explanatory dependency on the basic capacities. The ability to move spatially is similarly explained as derivative from the perceptual or intellectual capacities. Johansen claims that these capacities together with the nutritive may be understood as 'parts' of the soul, as they are basic to the definition and explanation of the various kinds of soul. Finally, he considers how the account of the capacities in the De Anima is adopted and adapted in Aristotle's biological and minor psychological works.

On the Heavens Aristotle - On the Heavens is Aristotle's chief cosmological treatise: written in 350 BC it contains his astronomical theory and his ideas on the concrete workings of the terrestrial world. This work is significant as one of the defining pillars of the Aristotelian worldview, a school of philosophy that dominated intellectual thinking for almost two millennia. Similarly, this work and others by Aristotle were important seminal works by which much of scholasticism was derived.