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Volume I · Ancient Greece · 624–262 BCE

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Peter Abelard

MedievalScholastic

Born 1079 CE

Died 1142 CE

The sharpest logician in Paris and the most famous lover. His mind cut through every argument. His heart cost him everything.

Abelard came to Paris and defeated every teacher in debate. He was the most popular lecturer of his age. Then he fell in love with Heloise, his student, and their affair became the most famous love story of the Middle Ages. Her uncle had Abelard castrated. He became a monk, she became a nun, and they wrote letters to each other for the rest of their lives. His philosophical method, Sic et Non (Yes and No), placed contradictory authorities side by side and forced students to reason their way through. It became the foundation of the scholastic method.

Places

Ideas

Reason

Words

“The beginning of wisdom is found in doubting; by doubting we come to the question, and by seeking we may come upon the truth.”

— Peter Abelard

Works

Sic et Non

·Latin

Abelard places contradictory statements from the Church Fathers side by side on 158 theological questions, forcing readers to reason through the contradictions. The method that launched scholasticism.

Life & Moments

c. 1108 CE

Teaching in Paris

Abelard became the most famous teacher in Europe. Students traveled from across the continent to hear him lecture on logic and theology on the hill of Sainte-Genevieve. He was brilliant, arrogant, and knew it. His public demolitions of rival teachers made him enemies.

c. 1117 CE

The Affair with Heloise

Hired as private tutor to Heloise, the brilliant niece of a Paris canon, Abelard fell in love with his student. They married secretly and had a son they named Astrolabe. When her uncle discovered the affair, he had Abelard castrated. Both entered monastic life. Their letters are among the most extraordinary documents of the Middle Ages.

c. 1120 CE

Writes Sic et Non

Compiled 158 theological questions where Church authorities contradicted each other. He offered no resolutions, only the contradictions. The method was revolutionary: he was teaching students to think through problems rather than accept answers. It became the foundation of scholastic method.

Influence

Influenced

  • →
    Thomas Aquinasmethodological influence

    Abelard's Sic et Non method of placing authorities in dialogue became the foundation of the scholastic question format Aquinas used.

Related Thinkers

Thomas Aquinas

1225 CE – 1274 CE

Read the Journey →Compare with Thomas Aquinas

Thinkers

A story-first philosophy atlas. Explore history's greatest thinkers through place, time, movement, and ideas.

Explore

  • Thinkers
  • Atlas
  • Works

Browse

  • Concepts
  • Volumes

About

  • About Thinkers
  • Image Credits

Volume I · Ancient Greece · 624–262 BCE