The commentary attributed to Simplicius on Aristotle's On the Soul appears in this series in three volumes, of which this is the first. The translation provides the first opportunity for a wider readership to assess the disputed question of authorship. Is the work by Simplicius, or by his colleague Priscian, or by another commentator? In the second volume, Priscian's Paraphrase of Theophrastus on Sense Perception, which covers the same subject, will also be translated for comparison.
Whatever its authorship, the commentary is a major source for late Neoplatonist theories of...

Book 3 of Aristotle's Physics primarily concerns two important concepts for his theory of nature: change and infinity. Change is important because, in Book 2, he has defined nature - the subject-matter of the Physics - as an internal source of change. Much of his discussion is dedicated to showing that the change occurs in the patient which undergoes it, not in the agent which causes it. Thus Book 3 is an important step in clearing the way for Book 8's claims for a divine mover who causes change but in whom no change occurs.
The second half of Book 3 introduces Aristotle's...

Aristotle's On Interpretation, the centrepiece of his logic, examines the relationship between conflicting pairs of statements. The first eight chapters, analysed in this volume, explain what statements are, starting from their basic components - the words - and working up to the character of opposed affirmations and negations.
Ammonius, who in his capacity as Professor at Alexandria from around AD 470 taught almost all the great sixth-century commentators, left just this one commentary in his own name, although his lectures on other works of Aristotle have been written up by his...

Themistius ran his philosophical school in Constantinople in the middle of the fourth century A.D. His paraphrases of Aristotle's writings are unlike the elaborate commentaries produced by Alexander of Aphrodisias, or the later Neoplatonists Simplicius and Philoponus. His aim was to provide a clear and independent restatement of Aristotle's text which would be accessible as an elementary exegesis. But he also discusses important philosophical problems, reports and disagrees with other commentaries including the lost commentary of Porphyry, and offers interpretations of Plato.
Themistius'...

Aristotle's Meteorology Book 4 provides an account of the formation of minerals, metals and other homogeneous stuffs. Eric Lewis argues that, in doing so, it offers fresh insight into Aristotle's concept of matter. The four elements (earth, air, fire and water) do have matter, and their matter is the contraries - hot and cold, moist and dry. Lewis further argues that in the text translated here, the only extant ancient commentary on the Meteorology, Alexander of Aphrodisias supports this interpretation of Aristotle. Such a conception of matter complements the account given at an...

Book 2 of the Physics is arguably the best introduction to Aristotle's ideas, as well as being the most interesting and representative book in the whole of his corpus. It defines nature and distinguishes natural science from mathematics. It introduces the seminal idea of four causes, or four modes of explanation. It defines chance, but rejects a theory of chance and natural selection in favour of purpose in nature.
Simplicius, writing in the sixth century AD, adds his own considerable contribution to this work. Seeing Aristotle's God as a Creator, he discusses how nature relates...

Simplicius and Priscian were two of the seven Neoplatonists who left Athens when the Christian Emperor Justinian closed the paganschool there in A.D. 529. The commentaries ascribed to them on works on sense-perception, one by Aristotle and one by his successor Theophrastus, are translated here in this single volume. Both commentaries give a highly Neoplatonic reading to their Aristotelian subjects and tell us much about late Neoplatonist psychology.
This volume is also designed to enable readers to assess a recent major controversy: it has been argued by Carlos Steel and Fernand Bossier...

Simplicius, the greatest surviving ancient authority on Aristotle's Physics, lived in the sixth century A. D. He produced detailed commentaries on several of Aristotle's works. Those on the Physics, which alone come to over 1,300 pages in the original Greek, preserve a centuries-old tradition of ancient scholarship on Aristotle.
In Physics Book 5 Aristotle lays down some of the principles of his dynamics and theory of change. What does not count as change: change of relation? The flux of time? There is no change of change, yet acceleration is recognised. Aristotle...

The first five chapters of Aristotle's De Generatione et Corruptione distinguish creation and destruction from mere qualitative change and from growth. They include a fascinating debate about the atomists' analysis of creation and destruction as due to the rearrangement of indivisible atoms. Aristotle's rival belief in the infinite divisibility of matter is explained and defended against the atomists' powerful attack on infinite divisibility.
But what inspired Philoponus most in his commentary is the topic of organic growth. How does it take place without ingested matter getting...

Aristotle's Topics is about dialectic, which can be understood as a debate between two people or the inner debate of one thinker with himself. Its purposes range from philosophical training to discovering the first principles of thought. Its arguments concern the four predicables (definition, property, genus and accident). Aristotle explains how these four fit into his ten categories, and in Book 1 begins to outline strategies for debate, such as the definition of ambiguity. Alexander's commentary on Book 1 discusses how to define Aristotelian syllogistic argument, why it stands up...