- Thales of Miletus (about 600 B.C.)
- There must be one primary matter from which everything has come forth by gradual differentiation
- Water as the primary matter
- Theory driven unknown
- Anaximenes (585-528 BC)
- air as the primary matter of all things
- Hercalitus (480 BC)
- fire as the primary matter of all things
jan 25 2021 ∞
jan 25 2021 +