(A.) FIRST PERIOD: The Dawn of philosophical Hellenism. (6th and 5th Cent. B.C.)
(1.) Sensualist Solution: The Ionians (6th cent. and early 5th cent. B.C.)
(2.) Rationalist Solution: The Eleatics (same period)
(3.) Via media - physical: the Atomists (late 5th cent. and 4th cent. B.C.)
(4.) Via media - psychological: the Sophists (same period)
(B.) SECOND PERIOD: The Climax of philosophical Hellenism (5th and 4th Cent. B.C.)
(1.) Socrates - born: 470ca.
(2.) Plato
(3.) Aristotle - died: 322ca.
(C.) THIRD PERIOD: Decline and transition. (4th Cent. B.C. - 6th Cent. A.D.)
(1.) Mythical Transition
(a.) Stoicism
(b.) Epicureanism
(c.) Skepticism
(2.) Ethical Transition
A Cheat Sheet on Stoic Physics is here.
A Cheat Sheet on Empedocles is here.
A Cheat Sheet on Zeno of Elea is here.
A Cheat Sheet on Parmenides is here.
A Cheat Sheet on Heraclitus is here.