Consists of Gregory Vlastos' studies on a variety of themes in Plato's metaphysics, epistemology, ethics, and social philosophy. This book offers solutions to crucial difficulties in this fundamental Platonic work. It contains extensively reviewed papers which comprise almost all of Gregory Vlastos' published work on Plato. "Serious students of Plato will welcome this volume not merely for the convenience of so numerous studies bound together, but especially for its provocative challenge."