This book offers a transcript of Strauss's seminar on Plato's Protagoras taught at the University of Chicago in the spring quarter of 1965, edited and introduced by renowned scholar Robert C. Bartlett. These lectures have several important features. Unlike his published writings, they are less dense and more conversational. Additionally, while Strauss regarded himself as a Platonist and published some work on Plato, he published little on individual dialogues. In these lectures Strauss treats many of the great Platonic and Straussian themes: the difference between the Socratic political science or art and the Sophistic political science or art of Protagoras; the character and teachability of virtue, its relation to knowledge, and the relations among the virtues, courage, justice, moderation, and wisdom; the good and the pleasant; frankness and concealment; the role of myth; and the relation between freedom of thought and freedom of speech.

In these lectures, Strauss examines Protagoras and the sophists, providing a detailed discussion of Protagoras as it relates to Plato's other dialogues and the work of modern thinkers. This book should be of special interest to students both of Plato and of Strauss.