Born: 560 B.C.   Xenophanes of Colophon was an Ancient Greek Presocratic philosopher, poet, and social-religious critic. Our knowledge of his views comes from his surviving poetry, all of which are fragments passed down as quotations by later Greek writers. His poetry criticized and satirized a wide range of ideas, including the belief in the pantheon of anthropomorphic gods. One famous passage ridiculed the idea that the gods resemble men by claiming that, if oxen were able to imagine gods, then those gods would be in the image of oxen. Because of his development of the concept of One God that is abstract, universal, unchanging, immobile and always present, Xenophanes is often seen as one of the first monotheists in the Western philosophy of religion. (Source)