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Secondary sourceBook4th century BC

Protagoras

Plato · 4th century BC

Plato's dialogue depicting a young Socrates challenging the famous sophist Protagoras, distinguishing his own methods from the paid teachers he was often confused with.

Shows Socrates distinguishing himself from the paid sophists, relevant to the accusations later made against him.

Black-and-white photograph of a manuscript page written in Greek uncial-style script in dark ink on aged parchment, with a heading reading Protagoras and Sophists, a large decorated initial letter at the left, and a round library stamp near the bottom.
Plato, Protagoras. Page from the Codex Oxoniensis Clarkianus 39 (Clarke Plato).

About this source

What it is

Protagoras is a dialogue written by Plato, set at the home of Callias in Athens, where Socrates debates the celebrated sophist Protagoras along with other sophists and prominent Athenians, including sons of Pericles and Alcibiades.

Why it matters

The dialogue examines whether virtue can be taught and the nature of goodness and pleasure. It shows a younger Socrates in direct contrast with Protagoras, a paid professional teacher, highlighting how Socrates saw himself as different from the sophists he was often grouped with by his contemporaries and accusers.

Look closer

  • Why does Socrates warn his young friend Hippocrates about the dangers of learning from a sophist?
  • What differences does the dialogue draw between Socrates and sophists like Protagoras?
  • How might this distinction have mattered to the people who later accused Socrates of corrupting youth?

This book is part of the curated material that grounds the AI version of Socrates and Pericles on Humy.ai — when students ask about related events, the AI can quote it and cite it.

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