Plato and Platonism remain fundamental to the practice of philosophy. This broad-ranging Companion comprises original contributions from some of the best Platonic scholars in the world today and reflects the various ways in which they are dealing with Plato's legacy. The Companion is ordered around three principles. First, the contributions are devoted to topics in Platonic philosophy, ranging from perception and knowledge to politics and cosmology. This allows readers to see how a position advocated in one of Plato's dialogues compares with positions advocated in others. Second, reading Plato in this way raises issues concerning the chronological order of the composition of the dialogues and Plato's philosophical development. Essays on various sides of the debate concerning Plato's development are represented. Finally, topics have been selected for their philosophical rather than their historical significance. The volume will be welcomed for the wide range of topics and the multiplicity of perspectives it presents. To aid study, it also includes overviews of Plato's life, works and philosophical method.