P.-J. (Pierre-Joseph) Proudhon

Born in Besançon in 1809, Pierre-Joseph Proudhon came from a poor family and worked as a printer before becoming a writer and political thinker. Largely self-educated, he gained wide attention with What Is Property? (1840), the book that introduced his most famous argument and helped establish his reputation as a radical critic of power and ownership.

Proudhon was a journalist, economist, and public figure as well as a philosopher. During the upheavals of 1848 in France, he served in the National Assembly and wrote constantly about justice, labor, credit, federalism, and social reform. He was also the first person known to describe himself as an anarchist, though his ideas centered less on chaos than on building a society through cooperation, local independence, and mutual exchange.

His work influenced later socialist and anarchist movements, even among readers who strongly disagreed with him. He died in 1865, but his arguments about property, authority, and freedom have kept him at the center of political debate ever since.