Pythagoras:

Rest satisfied with doing well, and leave others to talk of you as they please.

— Pythagoras Ancient

Pythagorean theorem, mathematics

Advice on self-contentment and disregarding external criticism.

c. 570-495 BCE (attributed later)

Verification

Confirmed

Found in 3 providers: gemini,deepseek,grok

Cross Reference

3 sources

"Eat not fish whose tails are black."

"There is geometry in the humming of the strings."

"Beans look like the gates of Hades."

"Don't mix a fire with a knife."

"Do not cut your nails on holy days."

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