# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/protagoras
# Generated: 2026-09-01T12:43:02.222Z

schema: https://schema.org/Person
url: "https://fame.am/person/protagoras"
name: "Protagoras"
slug: "protagoras"
description: "He gave us \"Man is the measure of all things\" — a line that still detonates in first-year philosophy seminars. Plato hated it, calling him a sophist who denied objective truth. What Protagoras actually meant was sharper: your life shapes what you call true, and democracy depends on respecting that."
tagline: "Pre-Socratic Greek philosopher (c.490–c.420 BC)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Salvator_Rosa_-_D%C3%A9mocrite_et_Protagoras.jpg"
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profileType:
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  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "-490"
deathDate: "-420"
livingStatus: "DECEASED"
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  momentum:             0
  historical:           24.525132
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  sourceConfidence:     60
  profileCompleteness:  60
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ranks:
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  category: 231
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# bio (long form, separated for readability)
bio: |
  Protagoras worked in Greece around 490–420 BC, before Socrates walked Athens. Plato later grouped him with the sophists and credited him with inventing the professional version of that role. The trouble started with a book called Truth, where Protagoras wrote that each person's history and experience determine their judgments — what's true or good or beautiful shifts with the observer. Plato read it as pure relativism and attacked it; popular opinion recoiled. But Protagoras insisted the discomfort was the point: a working democracy requires you to respect others' perspectives even when they clash with yours, because no one stands outside their own life to see the world raw. The controversy outlived him by millennia.