Plato’s formulation of the Principle of Non-contradiction (PNC) in Republic IV is the first full statement of the principle in western philosophy. His use of the principle might seem to suggest that he endorses the PNC. After all, how could one possibly deny so fundamental a principle—especially when it seems difficult to deny it without relying on it. However, the endorsement in the text is qualified. Socrates refers to the principle as one that he and his interlocutors will hypothesize and warns that if it should ever be shown to be false, all that follows from it will also be refuted. Scholars who have noticed this issue have tended to assume that the truth of the hypothesis in question can be guaranteed. Laurence Bloom argues against unthinkingly accepting this claim. He suggests that what emerges from the text is more sophisticated: Plato’s concession that the PNC is hypothetical is a textual clue pointing us to a complex philosophical argument that grounds the PNC, as well as the sort of reasoning it grounds, in form. Indeed, in framing the problem in this way, we can read the Republic as providing an extended argument for form. The argument for forms that emerges is complex and difficult. It is not and cannot be a normal, discursive argument. Indeed, the argument cannot even be one that assumes the PNC; if it did so, it would fall prey to a vicious circularity. Rather, the argument rests on the very possibility of our hypothesizing the PNC in the first place. Our ability to hypothesize the PNC—and perhaps our inability not to hypothesize it—is the linchpin. When we ask questions such as “to what objects does the PNC apply?” or “how is it possible that we apply the PNC?,” we are asking questions that lead us to the existence of form. The Principle of Non-contradiction in Plato’s Republic also explores the soul of the knower—the very entity to which and by which the principle is applied in the text—and its underlying unity.

Of all Plato’s dialogues, the Parmenides is notoriously the most difficult to interpret. Scholars of all periods have disagreed about its aims and subject matter. The interpretations have ranged from reading the dialogue as an introduction to the whole of Platonic metaphysics to seeing it as a collection of sophisticated tricks, or even as an elaborate joke. This work presents an illuminating new translation of the dialogue together with an extensive introduction and running commentary, giving a unified explanation of the Parmenides and integrating it firmly within the context of Plato's metaphysics and methodology. Scolnicov shows that in the Parmenides Plato addresses the most serious challenge to his own philosophy: the monism of Parmenides and the Eleatics. In addition to providing a serious rebuttal to Parmenides, Plato here re-formulates his own theory of forms and participation, arguments that are central to the whole of Platonic thought, and provides these concepts with a rigorous logical and philosophical foundation. In Scolnicov's analysis, the Parmenides emerges as an extension of ideas from Plato's middle dialogues and as an opening to the later dialogues. Scolnicov’s analysis is crisp and lucid, offering a persuasive approach to a complicated dialogue. This translation follows the Greek closely, and the commentary affords the Greekless reader a clear understanding of how Scolnicov’s interpretation emerges from the text. This volume will provide a valuable introduction and framework for understanding a dialogue that continues to generate lively discussion today.

In this volume, a distinguished group of philosophers aims to offer fresh insight into Platonic studies. Combining research with analysis, the authors present 14 essays on various dimensions of Plato's thought. Most of Plato's dialogues are examined, from such Socratic texts as Protagoras, Euthyphro and Crito to the allegedly late Sophist, Statesman and Laws. Several essays explore specific philosophical problems raised in a single Platonic dialogue. Some offer in-depth analysis of one dialogue - for instance, the volume includes two very different but highly provocative essays on Timateus. Others pursue a topic or theme that runs throughout a number of dialogues, and others speak about the Platonic heritage and the thought of ancient philosophers who regarded themselves as faithfully preserving and transmitting the doctrines of their master. The major subject divisions of philosophy are covered, with considerable attention being paid to issues of Platonist methodology.

The essays in this volume provide a picture of the most interesting, puzzling, and provoking aspects of Plato's Republic.

Investigates Plato's account of the tripartite soul, looking at how the theory evolved over the Republic, Phaedrus and Timaeus.

Plato's Republic has proven to be of astounding influence and importance. Justly celebrated as Plato's central text, it brings together all of his prior works, unifying them into a comprehensive vision that is at once theological, philosophical, political and moral. The essays in this volume provide a picture of the most interesting aspects of the Republic, and address questions that continue to puzzle and provoke, such as: Does Plato succeed in his argument that the life of justice is the most attractive one? Is his tripartite analysis of the soul coherent and plausible? Why does Plato seem to have to force his philosopher-guardians to rule when they know this is something that they ought to do? What is the point of the strange and complicated closing Myth of Er? This volume will be essential to those looking for thoughtful and detailed excursions into the problems posed by Plato's text and ideas.

The works collected in this volume form the true foundation of Western philosophy—the base upon which Plato and Aristotle and their successors would eventually build. Yet the importance of the Pre-Socratics thinkers lies less in their influence—great though that was—than in their astonishing intellectual ambition and imaginative reach. Zeno's dizzying 'proofs' that motion is impossible; the extraordinary atomic theories of Democritus; the haunting and enigmatic epigrams of Heraclitus; and the maxims of Alcmaeon: fragmentary as they often are, the thoughts of these philosophers seem strikingly modern in their concern to forge a truly scientific vocabulary and way of reasoning. For more than seventy years, Penguin has been the leading publisher of classic literature in the English-speaking world. With more than 1,700 titles, Penguin Classics represents a global bookshelf of the best works throughout history and across genres and disciplines. Readers trust the series to provide authoritative texts enhanced by introductions and notes by distinguished scholars and contemporary authors, as well as up-to-date translations by award-winning translators.