The Apologia and Florida of Apuleius of Madaura
Chapter 16
_magi_ applied to all workers of miracles, strictly designates the priests of Mazdeism, and well-attested tradition made certain Persians the inventors of genuine magic, the magic which the Middle Ages styled the black art. If they did not invent it, for it is as old as humanity, they were at least the first to give magic a doctrinal basis and to assign it a place in a well-defined theological system.... By the Alexandrian period, books attributed to Zoroaster, Hostanes, and Hystaspes were translated into Greek.' Cumont, Les Religions Orientales dans le Paganisme Romain, p. 227. Cp. Pliny, N.H. xxx. 7. _Plato_, Alcibiades i. 121 E.
_Zoroaster, son of Oromazes_, the founder of the ancient religion of Persia (Mazdeism).