22. About the Druids among the Celts

The Druids among the Celts enquired with the greatest minuteness into the Pythagorean philosophy, Zamolxis, Pythagoras’ slave, a Thracian by race, being for them the author of this discipline. He after Pythagoras’ death travelled into their country and became as far as they were concerned the founder of this philosophy. The Celts glorify the Druids as prophets and as knowing the future because they foretell to them some things by the ciphers and numbers of the Pythagoric art. On the principles of which same art we shall not be silent, since some men have ventured to introduce heresies constructed from them. Druids, however, also make use of magic arts.