John J. Cleary (1949–2009) was an internationally recognised authority in many aspects of ancient philosophy. As well as penetrating and original studies of Plato, Aristotle, and Proclus, he was particularly interested in the philosophy of mathematics, and ancient theories of education. The essays included in this collection display Cleary’s range of expertise and originality of approach. Cleary was especially attentive to the problems involved in the interpretation of a philosophical text: in his reading of Plato he recognised the special status of dialogue as a privileged mode of philosophical writing. His underlying concern was the open-ended character of philosophy itself, to be pursued with intellectual rigour and respect both for the question and one’s interlocutor. These collected essays are representative of John Cleary’s philosophical life’s work.

John J. Cleary (1949 2009) was an internationally recognised authority in ancient Greek philosophy. This volume of penetrating studies of Plato, Aristotle, and Proclus, philosophy of mathematics, and ancient theories of education, display Cleary s range of expertise and originality of approach.

Proclus (410-485) was the last great Greek philosopher. In this study, Proclus expert Lucas Siorvantes sets out to strip away the complexities surrounding this traditionally difficult philosopher, with the intention of providing an accessible introduction to his work. Based on extensive study of the primary sources, he takes the reader through Proclus' metaphysics and epistemology, introducing the results of original research as well as explaining the more difficult passages. Sorivantes surveys the philosophical climate of Late Antiquity dominated by Aristotle and Plato, and points out the direct influence Proclus had on the subsequent work of Kepler and Copernicus.

Stephen Gersch charts the influence of the late Greek philosopher Proclus from his own lifetime down to the Renaissance (500-1600 CE).

Proclus' On the Existence of Evils is not a commentary, but helps to compensate for the dearth of Neoplatonist ethical commentaries. The central question addressed in the work is: how can there be evil in a providential world? Neoplatonists agree that it cannot be caused by higher and worthier beings. Plotinus had said that evil is matter, which, unlike Aristotle, he collapsed into mere privation or lack, thus reducing its reality. He also protected higher causes from responsibility by saying that evil may result from a combination of goods. Proclus objects: evil is real, and not a privation. Rather, it is a parasite feeding off good. Parasites have no proper cause, and higher beings are thus vindicated as being the causes only of the good off which evil feeds.

This volume dispels the idea that Platonism was an otherworldly enterprise which neglected the study of the natural world. Leading scholars examine how the Platonists of late antiquity sought to understand and explain natural phenomena: their essays offer a new understanding of the metaphysics of Platonism, and its place in the history of science.

This book explores the various views on language and its relation to philosophy in the Platonic tradition by examening the reception of Plato's Cratylus in antiquity in general, and the commentary of the Neoplatonist Proclus in particular.

Of Proclus’ immense philosophical system, the part concerning the natural world may well be the most fascinating. Traditional scholarship tends to downplay that part of Neoplatonism, in favour of idealism, but recently this attitude is changing. This study contributes to that development by showing how Proclus’ natural philosophy relates to theology, while remaining a science in its own right. Starting from his Commentary on Plato’s Timaeus, it presents a revision of Proclus’ metaphysics of nature and provides new insight into his surprisingly peripatetic philosophy of science, the role of mathematics, and the nature of discourse in natural philosophy. This book will be of interest both to students of the Platonic tradition, and to historians of natural science, metaphysics and epistemology.

Forms and Concepts is the first comprehensive study of the central role of concepts and concept acquisition in the Platonic tradition. It sets up a stimulating dialogue between Plato’s innatist approach and Aristotle’s much more empirical response. The primary aim is to analyze and assess the strategies with which Platonists responded to Aristotle’s (and Alexander of Aphrodisias’) rival theory. The monograph culminates in a careful reconstruction of the elaborate attempt undertaken by the Neoplatonist Proclus (6th century AD) to devise a systematic Platonic theory of concept acquisition.

Proclus (412-485 A.D.) was one of the last official "successors" of Plato at the head of the Academy in Athens at the end of Antiquity, before the school was finally closed down in 529. As a prolific author of systematic works on a wide range of topics and one of the most influential commentators on Plato of all times, the legacy of Proclus in the cultural history of the west can hardly be overestimated. This book introduces the reader to Proclus' life and works, his place in the Platonic tradition of Antiquity, and the influence his work exerted in later ages. Various chapters are devoted to Proclus' metaphysical system, including his doctrines about the first principle of all reality, the One, and about the Forms and the soul. The broad range of Proclus' thought is further illustrated by highlighting his contribution to philosophy of nature, scientific theory, theory of knowledge, and philosophy of language. Finally, also his most original doctrines on evil and providence, his Neoplatonic virtue ethics, his complex views on theology and religious practice, and his metaphysical aesthetics receive separate treatments. This book is the first to bring together the leading scholars in the field and to present a state of the art of Proclean studies today. In doing so, it provides the most comprehensive introduction to Proclus' thought currently available.