In Categories chapters 7 and 8 Aristotle considers his third and fourth categories - those of Relative and Quality. Critics of Aristotle had suggested for each of the non-substance categories that they could really be reduced to relatives, so it is important how the category of Relative is defined. Aristotle offers two definitions, and the second, stricter, one is often cited by his defenders in order to rule out objections. The second definition of relative involves the idea of something changing its relationship through a change undergone by its correlate, not by itself. There were disagreements as to whether this was genuine change, and Plotinus discussed whether relatives exist only in the mind, without being real. The terms used by Aristotle for such relationships was 'being disposed relatively to something', a term later borrowed by the Stoics for their fourth category, and perhaps originating in Plato's Academy. In his discussion of Quality, Aristotle reports a debate on whether justice admits of degrees, or whether only the possession of justice does so. Simplicius reports the further development of this controversy in terms of whether justice admits a range or latitude (platos). This debate helped to inspire the medieval idea of latitude of forms, which goes back much further than is commonly recognised - at least to Plato and Aristotle.

Simplicius' commentary on Aristotle's Categories is the most comprehensive philosophical critique of the work ever written, representing 600 years of criticism. In his Categories, Aristotle divides what exists in the sensible world into ten categories of Substance, Quantity, Relative, Quality and so on. Simplicius starts with a survey of previous commentators, and an introductory set of questions about Aristotle's philosophy and about the Categories in particular. The commentator, he says, needs to present Plato and Aristotle as in harmony on most things. Why are precisely ten categories named, given that Plato did with fewer distinctions? We have a survey of views on this. And where in the scheme of categories would one fit a quality that defines a substance - under substance or under quality? In his own commentary, Porphyry suggested classifying a defining quality as something distinct, a substantial quality, but others objected that this would constitute an eleventh. The most persistent question dealt with here is whether the categories classify words, concepts, or things.

A translation of Simplicius' philosophical commentary on the Aristotle's Categories 7-8, with extensive commentary notes, introduction and indexes.

Presents Simplicius' selection of Presocratic texts. This book criticizes the lost commentary of the leading Aristotelian commentator, Alexander.

This book is about the epistemological views and arguments of the early Stoics. It discusses such questions as: How is knowledge possible, and what is it? How do we perceive things and acquire notions of them? Should we rely on arguments? How do we come to make so many mistakes? The author tries to give a comprehensive and conservative account of Stoic epistemology as a whole as it was developed by Chrysippus. He emphasizes how the epistemological views of the Stoics are interrelated among themselves and with views from Stoic physics and logic. There are a number of Stoic views and arguments that we will never know about. But there are passages on Stoic epistemology in Sextus Empiricus, Galen, Plutarch, Cicero, and a few others authors. The book is like a big jigsaw puzzle of these scattered pieces of evidence.

Basil of Caesarea’s debate with Eunomius of Cyzicus in the early 360s marks a turning point in the fourth-century Trinitarian controversies. It shifted focus to methodological and epistemological disputes underlying theological differences. This monograph explores one of these fundamental points of contention: the proper theory of names. It offers a revisionist interpretation of Eunomius’s theory as a corrective to previous approaches, contesting the widespread assumption that it is indebted to Platonist sources and showing that it was developed by drawing upon proximate Christian sources. While Eunomius held that names uniquely predicated of God communicated the divine essence, in response Basil developed a “notionalist” theory wherein all names signify primarily notions and secondarily properties, not essence.

Socrates, Or On Human Knowledge, published in Venice in 1651, is the only work written by a Jew that contains so far the promise of a genuinely sceptical investigation into the validity of human certainties. Simone Luzzatto masterly developed this book as a pièce of theatre where Socrates, as main actor, has the task to demonstrate the limits and weaknesses of the human capacity to acquire knowledge without being guided by revelation. He achieved this goal by offering an overview of the various and contradictory gnosiological opinions disseminated since ancient times: the divergence of views, to which he addressed the most attention, prevented him from giving a fixed definition of the nature of the cognitive process. This obliged him to come to the audacious conclusion of neither affirming nor denying anything concerning human knowledge, and finally of suspending his judgement altogether. This work unfortunately had little success in Luzzatto’s lifetime, and was subsequently almost forgotten. The absence of substantial evidence from his contemporaries and that of his epistolary have thus increased the difficulty of tracing not only its legacy in the history of philosophical though, but also of understanding the circumstances surrounding the writing of his Socrates. The present edition will be a preliminary study aiming to shed some light on the philosophical and historical value of this work’s translation, indeed it will provide a broader readership with the opportunity to access this immensely complicated work and also to grasp some aspects of the composite intellectual framework and admirable modernity of Venetian Jewish culture in the ghetto.

This book provides a collection of sources, many of them fragmentary and previously scattered and hard to access, for the development of Peripatetic philosophy in the later Hellenistic period and the early Roman Empire. It also supplies the background against which the first commentator on Aristotle from whom extensive material survives, Alexander of Aphrodisias (fl. c. AD 200), developed his interpretations which continue to be influential even today. Many of the passages are here translated into English for the first time, including the whole of the summary of Peripatetic ethics attributed to 'Arius Didymus'.

Leading figures in ancient philosophy present eighteen original papers on three key themes in the work of Richard Sorabji. The papers dealing with Metaphysics range from Democritus to Numenius on basic questions about the structure and nature of reality: necessitation, properties, and time. The section on Soul includes one paper on the individuation of souls in Plato and five papers on Aristotle's and Aristotelian theories of cognition, with a special emphasis on perception. The section devoted to Ethics concentrates upon Stoicism and the complex views the Stoics held on such topics as motivation, akrasia, oikeiôsis, and the emotions. The volume also contains a fascinating 'intellectual autobiography' by Sorabji himself, and a full Bibliography of his works.

Neoplatonists from Plotinus onward incorporate Aristotle’s logic and ontology into their philosophies: this process is of both intrinsic and historical interest and paves the way for subsequent philosophical debates in the Middle Ages and beyond. The ten essays collected in this book focus on the readings of Aristotle by Plotinus, Porphyry, and Iamblichus in the 3rd and 4th centuries. Their discussions cover key issues in the history of logic and metaphysics such as substance, hylomorphism, causation, existence, and predication. Among the topics tackled in this volume are Plotinus’ criticism of Aristotle’s physical essentialism, which is a major chapter in the history of metaphysics, and the interpretation of Porphyry’s Isagoge, one of the most influential and enigmatic works in the history of philosophy. Further essays focus on the readings of Aristotle’s categories developed by Porphyry and Iamblichus, which raise interesting questions at the intersection of logic and ontology, and on the integration of Aristotle’s ontology into Neoplatonist accounts of being and existence.