Cult of Reason

The Cult of Reason (French: Culte de la Raison) was France's first established state-sponsored atheistic religion, intended as a replacement for Roman Catholicism during the French Revolution. After holding sway for barely a year, in 1794 it was officially replaced by the rival deistic Cult of the Supreme Being, promoted by Robespierre. Both cults were officially banned in 1802 by Napoleon Bonaparte with his Law on Cults of 18 Germinal, Year X.