Philolaus of Croton

Philolaus was a Greek Pythagorean philosopher of the 5th century BCE, associated with the southern Italian city of Croton. He is the earliest Pythagorean from whom written fragments survive and is known for a cosmology in which all things are ordered by number, and for the striking proposal that the Earth is not at the center of the universe but moves around a central fire. His authentic fragments are debated by scholars.