Part 1: precursors; Thales; Anaximander; Anaximenes; Pythagoras; Alcmaeon; Xenophanes; Heraclitus. Part II: Parmenides; Melissus; Zeno. Part III: Empedocles; fifth-century Pythagoreanism; Hippasus; Philolaus; Ion of Chios; Hippo; Anaxagoras; Archelaus; Leucippus; Democritus; Diogenes of Apollonia.
Jonathan Barnes is Professor of Ancient Philosophy at the University of Geneva. He has held visiting posts at the University of Chicago, at the Institute for Advanced Study in Princeton, at the University of Massachusetts in Amherst and at the University of Texas. He was also a fellow of Oriel College, Oxford. His publications include The Cambridge Companion to Aristotle (1995), and The PreSocreatic Philosophers (1979).