Auguste Comte's Religion of Humanity is an interesting and obscure oddity in the history of Freethought. It was invented by the French philosopher Auguste Comte (1798-1857, also at philosophyprofessor.com). Auguste Comte had invented the word "sociology" for the study of human society, and he had proposed that ideas and theories develop through three stages: Historians and philosophers of science will likely dismiss it as ludicrously oversimplified, but that's another story. That church has its own site, Igreja Positivista do Brasil (Positivist Church of Brazil).