Jean-Paul Marat, Swiss-French physician, scientist and theorist (born 1743)

Jean-Paul Marat was a French political theorist, physician, and scientist. A journalist and politician during the French Revolution, he was a vigorous defender of the sans-culottes, a radical voice, and published his views in pamphlets, placards and newspapers. His periodical L'Ami du peuple made him an unofficial link with the radical Jacobin group that came to power after June 1793.

July 13 is the 194th day of the year in the Gregorian calendar; 171 days remain until the end of the year.