You do realize it was a follower of the cult of reason, Robespierre, who was responsible for the reign of terror.
Nope, Robespierre was of the Cult of the Supreme Being, which under him replaced the Cult of Reason, and he strongly rejected their atheism
...In the spring of 1794, the Cult of Reason was faced with official repudiation when Robespierre, nearing complete dictatorial power, announced his own establishment of a new, deistic religion for the Republic, the Cult of the Supreme Being.[11] Robespierre denounced the Hébertistes on various philosophical and political grounds, specifically rejecting their atheism. When Hébert, Momoro, Ronsin, Vincent and others were
So... while investigating Wikipedia I found out about an actual Cult. Of Reason. Revolutionary France. From the description, it sounds pretty awesome. Here's he link. Is this denomination usable? Is it useful? Can it be resurrected? Should it be? Is it compatible with what we stand for? Discuss. Also, note that in French "Culte" does not mean "Sect", it means "the act of worshipping".