The myth became the basis of the spiritual belief and of the mystic ceremonial, and was made the center of that movement which we call Orphism. Who the founder, Orpheus, was, we cannot say. The ancients knew him as a Thracian, a magical musician, and also as a priest of Dionysus. In the popular tradition the musician overshadowed the priest. Yet he was regarded as the founder of the Bacchic or Dionysiac rites. The truth we can never know; but thus much is certain, that in the sixth century, possibly because of a second wave of Dionysiac religion, a movement appeared in which the religion of Dionysus was spiritualized and ennobled, and in which consecration, ceremonial holiness in this life, became the chief concern as the means of securing that immortality which would follow. The movement, however, which may have been stimulated by a feeling of dissatisfaction with the traditional religion, was only one prominent manifestation of the general mysticism which showed itself in many forms during the sixth century. Pythagoreanism was closely allied to it. Indeed some think Orphism only a collective name for the mysticism of the time. Our information as to the beginning and earliest forms of Orphism is scanty and mostly late. But considering the influence which Orphic ideas had in the fifth century, for example on Pindar, Empedocles, and Plato, not to speak of the latter Neoplatonists, we are justified in regarding the sect as of great significance. And we have a warrant for attributing to the sixth century doctrines which are consistently set forth by our witnesses, especially by Empedocles and Plato, so that with due caution we may use also the fragmentary Orphic literature with some confidence. We do not know where Orphism started. In Greece proper, Delphi, Thebes, and Athens were prominent centers; in greater Greece, Croton in southern Italy, Camarina and Syracuse in Sicily. Some would regard southern Italy, and specifically the city of Croton, as the home of the movement; possibly they are correct, for tradition told of three great Orphics at the court of Pisistratus. They were Zopyrus of Heraclea, Orpheus of Croton, and Onomacritus, who formed part of the commission which is said to have arranged the Homeric poems at the orders of the Athenian tyrant. Whatever the truth of the tradition in detail is, it is significant that two of the three came from southern Italy; and the name of one of the commission, Orpheus, marks him as a devotee. Yet Athens became the literary center, if I may use the term, for the diffusion of Orphism.