The Refutation of All Heresies
The Druids and Hesiod
The Druids and Pythagoras
The Celtic Druids also pursued the Pythagorean philosophy to its very heights, after Zalmoxis, a Thracian by birth and a servant of Pythagoras, became the founder of this training among them. For after the death of Pythagoras, Zalmoxis traveled there and became the founder of this philosophy among them.
The Celts regard these men as prophets and seers, because they foretell certain events for them from calculations and numbers by the Pythagorean art. We will not keep silent about the methods of that art either, since some have presumed to build heresies out of them as well. The Druids also resort to magical rites.
Hesiod and the Muses
But Hesiod the poet says that he too heard about nature in this way from the Muses, and that the Muses are the daughters of Zeus. For when Zeus, in the excess of his desire, had lain with Mnemosyne for nine nights and days together without a break, Mnemosyne conceived in one womb those nine Muses, becoming pregnant with one on each night. Then, summoning the nine Muses from Pieria — that is, from Olympus — he begged to be taught:
Hesiod goes on to list all the rest of the giants descended from Cronus, and somewhere afterward says that Zeus was born of Rhea. All of these men, then, made the statements above in their teaching about both the nature and the origin of the universe. But every one of them fell short of what is divine, and busied himself with the substance of the things that exist. They were astonished at the sheer size of creation, and supposed that these things themselves were the divine, each thinker preferring for himself a different part of the world; but they failed to recognize the God who made these things.
So I consider that we have now given a sufficient account of the opinions of those among the Greeks who have attempted to construct systems of philosophy. It is from these that the heretics have taken their cue, trying to establish the doctrines that will be set out shortly. It seems best, however, first to explain the mystery rites, and whatever imaginary teachings some have laboriously constructed about the stars or about magnitudes, and to lay those out; for the heretics take their cue from these as well, and so are thought by most people to be uttering marvels. After that we will expose the feeble opinions these men advance.