THALES OF MILETUS
2. ANAXIMANDER OF MILETUS
3. HERACLITUS of EPHESUS
4. ANAXAGORAS of CLAZOMENAE
5. EMPEDOCLES of AGRIGENTUM
6. PYTHAGORAS
7. XENOPHANES of COLOPHON
8. PARMENIDES
9. ZENO of ELEA
10. DEMOCRITUS of ABDERA