Anaximander (611–547 B.C.) was from Miletus and was an associate of Thales. Anaximander is famous for being a naturalistic Pre-Socratic philosopher who held that fire was the main element in the world. He also was an early proponent of evolution who believed that people were fish-like animals. As a result, Anaximander preached against eating fish. Talented in several areas, Anaximander made the first map of the world and stars and invented a sundial and all-weather clock.