42 To come to the Gymnosophists of India, the opinion is authoritatively handed down that Budda, the founder of their religion, had his birth through the side of a virgin. And we need not wonder at this in the case of Barbarians when cultured Greece supposed that Minerva at her birth sprang from the head of Jove, and Father Bacchus from his thigh. Speusippus also, Plato's nephew, and Clearchus in his eulogy of Plato, and Anaxelides in the second book of his philosophy, relates that Perictione, the mother of Plato, was violated by an apparition of Apollo, and they agree in thinking that the prince of wisdom was born of a virgin. Timæus writes that the virgin daughter of Pythagoras was at the head of a band of virgins, and instructed them in chastity. Diodorus, the disciple of Socrates, is said to have had five daughters skilled in dialectics and distinguished for chastity, of whom a full account is given by Philo the master of Carneades. And mighty Rome cannot taunt us as though we had invented the story of the birth of our Lord and Saviour from a virgin; for the Romans believe that the founders of their city and race were the offspring of the virgin Ilia and of Mars.
Source: Against Jovinianus (New Advent)