Thales
All is Water
Milesians
First western philosophers
Named after their town
Anaximander
Pupil of Thales
Fire surrounding dark mist
Anaximenes
All is air
Puthagoreas
Things are in accordance with numbers
Heraclitus
All is fire
Problem of identity
Heraclitus
You can never step into the same river twice
Problem of personal identity
You are not the same person you were when you were born or when you were 15 or when you are 60
Parmenides
Principles of reason
Being does not change
Empedocles
How and why
Four elements
Anaxagoras
The difference between matter and mind
Athens
Infinitely divisible
Mind controls matter
Leucippus and Democritus
Atomism