For over eight hundred years, philosophers--men and women--who called themselves Cynics, literally "dogs" in their language, roamed the streets and byways of the Hellenistic world, teaching strange ideas and practicing a bizarre way of life. Among them, the most important and distinctive was Diogenes of Sinope, who became the archetype of Classical Cynicism. In this comprehensive, thoroughly researched, and engaging book, philosopher Luis E. Navia...