Charles H KahnCharles H. Kahn is Professor Emeritus of Philosophy at the University of Pennsylvania. His publications include Anaximander and the Origins of Greek Cosmology, 3rd edition (1994), The Art and Thought of Heraclitus: A New Arrangement and Translation o the Fragments with Literary and Philosophical Commentary (1979), Plato and the Socratic Dialogue: The Philosophical Use of a Literary Form (1997) and Pythagoras and the Pythagoreans: A Brief History (2001). Read More Read Less