Hippo
Hippo (Greek: Ἵππων) (ca. 425 BCE) was native of Magna Graecia (Italy). Very little is known about him. He held that water was the principle of all things, with fire springing from water, and then developing itself by generating the universe. Primarily interested in biological matters, he was said to have been an atheist.
Read more about this topic: Ionian School (philosophy)