Jonathan BarnesJonathan Barnes taught at Oxford for twenty-five years, being a Fellow first of Oriel and then of Balliol. He then spent eight years at the University of Geneva, before becoming professor of ancient philosophy at the Sorbonne. He is a Fellow of the Bitish Academy, and of the American Academy of Arts and Sciences. His many publications include The Ontological Argument; Aristotle's Posterior Analytics; Aristotle; The Complete Works of Aristotle; Truth, etc.; Method and Metaphysics: Essays in Ancient Philosophy I; with J. Annas, The Modes of Scepticism; Early Greek Philosophy; The Toils of Scepticism; The Cambridge Companion to Aristotle; and Porphyry: Introduction. Read More Read Less