Transmigration is often regarded as an integral part of Platonic teaching and it is, of course, an undisputed fact that the idea of rebirth occurs very often in the Platonic dialogues; it holds an especially prominent position in most of his expositions of future life. Yet on closer examination it may be doubted whether Plato really considered the question of rebirth capable of or worthy of a serious and formal treatment. Metempsychosis is most often mentioned in the so-called Platonic myths, and almost regularly these are preceded by a cautious warning that what will follow is a myth, or a tradition, which may be true, but, obviously, cannot be presented as capable of proof. Even when metempsychosis is mentioned outside the myths, it is frequently, if not always, referred to as a “tradition.”