Cult of Reason
From Conservapedia
The Cult of Reason was set up during the French Revolution by French revolutionaries Hebert, Chaumette, and Cloots on November 10, 1793. The cult abolished the worship of God in France, and instead called for the worship of reason. During the strong waxing and waning of power positions during the revolution, the three fell out of favor during a sudden change and were quickly executed by Robespierre on March 24, 1794, effectively ending the outlawing of religion in France.