An ancient compendium of ancient philosophy. Placita (Tenets), generally attributed to an author named Aëtius and dating from the late first or early second century AD, was a compendium setting out in summary fashion the principal doctrines and opinions of philosophers and philosophical schools in response to questions and topics in the domain of natural philosophy. Now lost, Placita can be largely reconstructed from the work of three authors working in the period from the second to the fifth century (Pseudo-Plutarch, Stobaeus, and Theodoret) who quote from it extensively. Placita is organized into five books: First Principles; Cosmology; Meteorology and the Earth; Psychology; and Physiology. Each chapter contains a list of short opinions or tenets, which are ascribed to an individual philosopher and/or school and usually arranged in sections that stress the variety and contrast of the teachings concerned. Designed as a multi-purpose resource, Placita long served as a manual of neatly packaged doxographic material on a wide variety of topics, to be used for study, as an aide-mémoire, for displays of erudition, for persuasion in rhetorical or apologetic contexts, and for personal enlightenment, and it remains a valuable source for our knowledge of Presocratic and Hellenistic philosophy. This edition of Aëtius’ Placita offers a fresh translation, ample annotation, and a text fully informed by the latest scholarship.

Jaap Mansfeld and Frans de Haas bring together in this volume a distinguished international team of ancient philosophers, presenting a systematic, chapter-by-chapter study of one of the key texts in Aristotle's science and metaphysics: the first book of On Generation and Corruption. In GC I Aristotle provides a general outline of physical processes such as generation and corruption, alteration, and growth, and inquires into their differences. He also discusses physical notions such as contact, action and passion, and mixture. These notions are fundamental to Aristotle's physics and cosmology, and more specifically to his theory of the four elements and their transformations. Moreover, references to GC elsewhere in the Aristotelian corpus show that in GC I Aristotle is doing heavy conceptual groundwork for more refined applications of these notions in, for example, the psychology of perception and thought, and the study of animal generation and corruption. Ultimately, biology is the goal of the series of enquiries in which GC I demands a position of its own immediately after the Physics. The contributors deal with questions of structure and text constitution and provide thought-provoking discussions of each chapter of GC I. New approaches to the issues of how to understand first matter, and how to evaluate Aristotle's notion of mixture are given ample space. Throughout, Aristotle's views of the theories of the Presocratics and Plato are shown to be crucial in understanding his argument.

A full account of the philosophy of the Greek and Roman worlds from the last days of Aristotle (c.320 BC) until 100 BC. Hellenistic philosophy, for long relatively neglected and unappreciated, has over the last decade been the object of a considerable amount of scholarly attention. Now available in paperback, this 1999 volume is a general reference work which pulls the subject together and presents an overview. The History is organised by subject, rather than chronologically or by philosophical school, with sections on logic, epistemology, physics and metaphysics, ethics and politics. It has been written by specialists but is intended to be a source of reference for any student of ancient philosophy, for students of classical antiquity and for students of the philosophy of later periods. Greek and Latin are used sparingly and always translated in the main text.