Xenophanes, pre-Socratic. Sixth cent. Greek from Colophon. Explored epistemology-there was a deeper truth that we could not completely know. Posited there may be only one big god, almost pantheistic like Spinoza. Skeptic about religious belief, particularly anthropomorphism:
But if cattle or lions had hands, so as to paint with their hands and produce works of art as men do, they would paint their gods and give them bodies in form like their own—horses like horses, cattle like cattle.
Two Strikes 