LUIS E. NAVIA is Professor of Philosophy at New York Institute of Technology. He has written extensively in philosophy and is a member of the New York Academy of Sciences. His most recent books are The Philosophy of Cynicism (Greenwood, 1995), Classical Cynicism: A Critical Study (Greenwood, 1996), Diogenes of Sinope: The Man in the Tub (Greenwood, 1998), and The Adventure of Philosophy (Praeger, 1999).