Ph.D., Princeton,1971. Joined the faculty in 1990 as the inaugural Edmund N. Carpenter II Class of 1943 Professor in the Humanities and professor of philosophy and comparative literature, after tenures at the University of Pittsburgh and the University of Pennsylvania. He is the author of "On Friendship” (2016), “Only a Promise of Happiness: The Place of Beauty in a World of Art” (2007), “The Art of Living: Socratic Reflections from Plato to Foucault” (2000), “Virtues of Authenticity: Essays on Plato and Socrates” (1999), “Nietzsche: Life as Literature “(1985), and translated Plato’s “Symposium” and “Phaedrus “into English (with Paul Woodruff).