Early state administrator in Qi. Helped centralize state power and develop taxes.
Water was his first principle (everything was either literally water, or somehow composed of water)
First principle of Apeiron (the infinite). Earth is situated in free space, unsupported by anything, and stays in place because the possible directions of movement balance one another.
First principle is air, but like Anaximander it is infinite.
A poet who was critical of earlier poets, particularly their depiction of the gods and of morality. He believed that true knowledge could not be attained with regards to first principles of the cosmos or of the gods, but we could form true opinions about the world through observation.
Advocated for a strict way of living.
Difficult to separate the thought of Pythagoras from the thoughts of his followers.
Opposite qualities are held in the same object. Everything is somehow made of fire, or derived from fire. Everything is unified in one (although held in different objects).