"Apart from moral conduct," Kant wrote, "all that man thinks himself able to do in order to become acceptable to God is mere superstition and religious folly."

“I resist all established beliefs... Do unto others: How much deeper into religion do we really need to go?”

Although the playwrights mock the William Jennings Bryan character, they are really focused on defending freedom of thought in a time of anti-communist hysteria.

Darrow said, "I don't believe in God because I don't believe in Mother Goose."

France once said, "Of all the sexual aberrations, chastity is the strangest," and "Religion has done love a great service by making it a sin."

This deathbed conversion, by so critical a thinker as Leonardo, who would have nothing to lose by professing piety all his life, can only mean that during his prime years he was a secret freethinker.

"Atheism may be defined as the mental attitude which unreservedly accepts the supremacy of reason, independent of all arbitrary assumptions of authority and creeds."

Hitchens says, "I'm an atheist. I'm not neutral about religion, I'm hostile to it. I think it is a positively bad idea, not just a false one. And I mean not just organized religion, but religious belief itself."

“No man shall be compelled to frequent or support any religious worship, place, or ministry whatsoever… All men shall be free to profess, and by argument to maintain, their opinions in matters of religion.”

The existence of God is irrelevant to Jain doctrine, making Jainism the oldest atheistic religion.