This volume contains papers and commentaries presented to the Boston Area Colloquium in Ancient Philosophy during the academic year 2007-8. The papers discuss a wide range of topics related to Plato and Aristotle. On Plato, topics include false pleasures in the Philebus, the tripartite soul in the Republic, and rhetoric in the Phaedrus, and on Aristotle, the relation of the physical and psychological in De Anima, of virtue and happiness in the Ethics, of body and nature in the Physics, and the role of pros hen in the Metaphysics. One other paper argues for the Aristotelian origin of Stoic determinism.