The Lives and Opinions of Eminent Philosophers · Character
Euclides of Megara
The quarrelsome founder of the Megarian school, who turned Socratic dialogue into a weapon of eristic debate and paid for it with exile.
supporting
Also known as the quarrelsome Euclides
First appearance: Euclides
As a supporting figure in The Lives and Opinions of Eminent Philosophers, Euclides of Megara is not background color—the story leans on what they do once the chapter opens.
Founder of the Megaric school; studied Parmenides; taught that the chief good is unity; hosted Plato and other philosophers after Socrates' death.
Euclides of Megara was a devoted follower of Socrates who, after the master's death, sheltered Plato and other Socratics in his hometown and built a school around the art of argument. He was known for his combative style — the kind of dialectician who could turn any conversation into a contest — and his willingness to defy the Thirty Tyrants, who forbade him to teach. His presence in the Lives marks the moment when Socratic philosophy begins to splinter into rival schools, each claiming the true inheritance.
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See Euclides of Megara in Euclides