Plato's Republic is a central text in the Western philosophical tradition and also a specimen of its author's exceptional literary and dramatic skill. The first book introduces, and conspicuously fails to answer, the question: What is justice? It also introduces the sophist Thrasymachus, who is quite certain that he knows what justice is, namely that it is nothing other than what the dominant power in the state considers to be in its own interest. The contentious confrontation between Thrasymachus and Socrates sets the stage for Plato's controversial construction of an ideal state in which the true nature of justice will be revealed. The Commentary draws attention to the way Plato anticipates developments in later books, thus serving as an introduction to Republic as a whole. Particular attention is paid to Plato's language and style, so that students of Greek literature as well as philosophy are well served.

'The Commentary does not assume any great knowledge of Greek among its readers, and any and all potential grammatical or syntactical problems are handled with admirable clarity.' Colin Leach, Classics for All
'The volume brings out Plato's stunning variety of ideas, moves, provocations, and dubious spans of argumentation. It draws from an attractively eclectic variety of literature, much of it from the past three decades though with choice older works … Any philosopher or classicist should consult it continuously when studying, writing about, or teaching the dialogue.' Christopher Moore, Bryn Mawr Classical Review
'This is a fantastic commentary for upper-level undergraduates and graduate students of Ancient Greek.' Bernd Steinbock, Western University
'I have great admiration for this work. His learned and judicious commented edition will be an indispensable and much appreciated working tool for Platonists for many years to come.' Gerard Boter, Exemplaria Classica

DAVID SANSONE is Professor Emeritus in the Department of Classics at the University of Illinois at Urbana-Champaign. He has published on topics ranging from Bronze-Age iconography to the poetry of John Milton and the music dramas of Richard Wagner. He specializes in Greek language and literature and is the author of Greek Athletics and the Genesis of Sport (1988), Greek Drama and the Invention of Rhetoric (2012), Ancient Greek Civilization (2016) and Plato: Menexenus (Cambridge, 2020).