Pythagoras — "Do only those things which will not harm thee, and deliberate before you act."
Do only those things which will not harm thee, and deliberate before you act.
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More from Pythagoras
"Anger begins with folly and ends with repentance."
"Above all things, reverence yourself."
"In anger we should refrain both from speech and action."
"The wise man should be prepared for everything that does not lie within his power."
"Above the cloud with its shadow is the star with its light."
About Pythagoras (c. 570-495 BCE)
Greek philosopher and mathematician whose school in Croton combined geometry (the Pythagorean theorem), number-mysticism, and a religious-vegetarian way of life. Closely associated with Thales of Miletus (earlier pre-Socratic and the first philosopher). For an intellectual contrast, see Heraclitus, pre-Socratic Greek philosopher of flux — Heraclitus called Pythagoras 'the chief of swindlers' — among the founding insults of the philosophical-rivalry tradition. Their 'all is flux' vs 'all is number' poles still organize the philosophy of mathematics today (Platonist vs anti-realist).
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Understanding this quote
What it means
Protect yourself from self-inflicted harm and think before you commit to any course of action. The advice is straightforward: avoid choices that damage your wellbeing — physically, morally, or socially — and resist impulsive decisions. Pause, reason through consequences, then act. It prizes rational self-governance over reactive behavior, treating deliberation not as hesitation but as the foundation of wise living.
Relevance to Pythagoras
Pythagoras founded a disciplined philosophical brotherhood with strict codes governing diet, speech, and conduct. His mathematical work demanded rigorous proof before any conclusion — no theorem accepted without demonstration. His school required initiates to spend years in silent study before they could speak or debate. This quote mirrors that ethos exactly: act only after your reasoning is complete, treating hasty action as intellectually and morally reckless.
The era
In sixth-century BCE Greece, city-states were volatile — alliances shifted, factional violence was common, and rash political or personal decisions could mean exile or death. Pre-Socratic philosophers were redefining human responsibility by replacing divine fate with reasoned agency. The Delphic maxim 'nothing in excess' reflected a broader cultural anxiety about hubris. Deliberate restraint was a survival skill as much as a virtue, making this counsel urgently practical rather than merely philosophical.
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