Religious humanism is an integration of humanist ethical philosophy with religious rituals and beliefs that center on human needs, interests, and abilities.
Humanism as it was conceived in the early 20th century rejected revealed knowledge, theism-based morality and the supernatural. In the late 20th century the Humanist movement that affirms the dignity and worth of all people came into conflict with conservative Christian groups in the United States and "Secular Humanism" became the most popular element of organized Humanism. Though practitioners of religious humanism did not officially organize under the name of "humanism" until the late 19th and early 20th centuries, non-theistic religions paired with human-centered ethical philosophy date to the Enlightenment era.
The Cult of Reason (French: Culte de la Raison) was an atheist religion devised during the French Revolution by Jacques Hébert, Pierre Gaspard Chaumette and their supporters.
In 1793 during the French Revolution, the cathedral Notre Dame de Paris was turned into a Temple to Reason and for a time Lady Liberty replaced the Virgin Mary on several altars.
In the 1850s, Auguste Comte, the Father of Sociology, founded Positivism, a "religion of humanity". Auguste Comte was a student and secretary for Claude Henri de Rouvroy, Comte de Saint-Simon, the Father of French Socialism. Auguste Comte coined the term "altruism".