All places are filled with fools.
Stultorum plena sunt omnia.
Original text (Latin)
More quotes by Cicero
I never cease urging peace, which, however unfair, is better than the justest war in the world.
Every one is least known to himself, and it is very difficult for a man to know himself.
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If the fool would persist in his folly he would become wise.
'The fool doth think he is wise, but the wise man knows himself to be a fool.'
Young men think old men are fools; but old men know young men are fools.
Attribution
Quote text and notes from Wikiquote: Cicero (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.