The French philosopher Voltaire is best remembered for his advocacy of the freedom of religion and speech, and the separation of church and state. And as a deist, he also supported the toleration of other religions and ethnicity and didn't agree in people's fanaticism, idolatry, and superstition.
These ideas widely influenced the First Amendment, which it's the amendment that prevents the government from creating a nationally recognized religion and from prohibiting the restriction of an individual’s religious practices, and that guarantees people's freedoms concerning expression, assembly, and the right to petition the government for a redress of grievances.
