from Thales to the Stoics
c. 600 BC — c. 200 AD
What is the world made of? What stays the same beneath all change?
Reality is number. Geometry reveals the harmonics of the cosmos — the same ratios that make a lyre sing govern the orbits of the stars.
A secretive brotherhood, vegetarianism, and a doctrine of the transmigration of the soul. Math became sacred.
"I know that I know nothing."
He wrote nothing. He walked the agora asking questions until certainty crumbled — the elenchus, the method of refutation.
Tried for impiety and corrupting the youth. He drank the hemlock rather than flee.
Behind every fleeting thing stands an eternal Form — the perfect Triangle, the Good itself. The world we see is shadow.
In The Republic: justice, the philosopher-king, the allegory of the cave.
Founded the Academy — the West's first university.
Plato's brightest student broke with him: knowledge begins not in the Forms but in observation. He cataloged everything.
Convention is a cage. Wealth, status, and shame are illusions invented by the polis to make you obedient.
"Stand a little out of my sun." — Diogenes, to Alexander the Great
Diogenes of Sinope lived in a wine jar, owned nothing, and barked at hypocrites in the marketplace. Virtue, he taught, comes through asceticism — living in radical accord with nature.
The highest good is pleasure — not indulgence, but ataraxia: the tranquil absence of pain and fear.
All matter is atoms in the void. Atoms occasionally swerve — this small randomness rescues human freedom.
Don't fear death: "When I am, death is not. When death is, I am not."
Live according to nature and reason. Keep firm hold of the only thing you truly own: your judgment.
"Some things are in our control, and others not." — Epictetus
Pyrrho of Elis traveled with Alexander to India, and returned convinced that for every argument an equally good counter-argument exists.
The way out is epoché — suspension of judgment. Stop insisting reality is one way or the other.
From this suspension flows ataraxia: an unexpected, hard-won peace.
"The safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato."
— Alfred North Whitehead
Logic, ethics, science, politics, education, the very idea of argument itself — the Greeks invented the categories we still think inside.
Every time you ask "but what does that really mean?", you are doing what Socrates did in the agora 2,400 years ago.
— ΤΕΛΟΣ —