Traité sur la tolérance

"Traité sur la tolérance" by Voltaire is a philosophical essay published in 1763. Written to rehabilitate Jean Calas, a Protestant falsely accused and executed for allegedly murdering his son to prevent his conversion to Catholicism, the work calls for religious tolerance and attacks religious fanaticism. Voltaire examines tolerance across Greek, Roman, Jewish, and Christian traditions, combining reasoned argument with moments of humor. The essay gained renewed relevance in 2015 following the Charlie Hebdo attacks, when sales surged worldwide.