Pythagoras of Samos • ca. 560-ca. 480 BC) • "For I discerned a certain sublimity in the discipline of Pythagoras, and how a certain secret wisdom enabled him to know, not only who he was himself, but also who he had been; and I saw that he approached the altars in purity, and suffered not his belly to be polluted by partaking of the flesh of animals; and that he kept his body pure of all garments woven of dead animal refuse; and that he was the first of mankind to restrain his tongue, inventing a discipline of silence described in the proverbial phrase, "An ox sits upon it." I also saw that his philosophical system was in other respects oracular and true. So I ran to embrace his teachings..." - Apollonius of Tyana