486 BC - 420 BC

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Protagoras (; Greek: Πρωταγόρας; c. 490 BC – c. 420 BC) was a pre-Socratic Greek philosopher and rhetorical theorist. He is numbered as one of the sophists by Plato. Read more on Wikipedia

Since 2007, the English Wikipedia page of Protagoras has received more than 824,830 page views. His biography is available in 65 different languages on Wikipedia (up from 63 in 2019). Protagoras is the 48th most popular philosopher (up from 55th in 2019), the 24th most popular biography from Greece (up from 28th in 2019) and the 8th most popular Greek Philosopher.

Protagoras is most famous for his saying "man is the measure of all things."

Memorability Metrics

  • 820k

    Page Views (PV)

  • 84.08

    Historical Popularity Index (HPI)

  • 65

    Languages Editions (L)

  • 13.50

    Effective Languages (L*)

  • 2.82

    Coefficient of Variation (CV)

Page views of Protagoras by language


Among philosophers, Protagoras ranks 48 out of 1,089Before him are Parmenides, Origen, Thomas More, Al-Farabi, Michel Foucault, and Karl Popper. After him are Hannah Arendt, Henri Bergson, Plotinus, Zeno of Elea, John Amos Comenius, and Mikhail Bakunin.

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Among people born in 486 BC, Protagoras ranks 1 Among people deceased in 420 BC, Protagoras ranks 1After him are Callicrates, Archidamus II, and Oenopides.

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In Greece

Among people born in Greece, Protagoras ranks 24 out of 855Before him are Euripides (-480), Kösem Sultan (1590), Phidias (-490), Thucydides (-460), Sappho (-630), and Aeschylus (-525). After him are Themistocles (-524), Demosthenes (-384), Hayreddin Barbarossa (1478), Leonidas I (-540), Xenophon (-430), and Pargalı Ibrahim Pasha (1493).


Among philosophers born in Greece, Protagoras ranks 8Before him are Plato (-427), Socrates (-470), Pythagoras (-570), Epicurus (-341), Democritus (-460), and Plutarch (46). After him are Gorgias (-483), Theophrastus (-371), Pyrrho (-365), Antisthenes (-445), Leucippus (-500), and Isocrates (-436).