Nothing is greater than to break the chains from the bodies of men, nothing nobler than to destroy the phantom of the soul.

No man of sense in the whole world believes in devils any more than he does in mermaids, vampires, gorgons, hydras, naiads, dryads, nymphs, fairies, the Fountain of Youth, [or] the Philosopher's Stone. . . .

The Old Testament filled this world with tyranny and injustice, and the New gives us a future filled with pain for nearly all of the sons of men. The Old Testament describes the hell of the past, and the New the hell of the future.

I am simply in favor of intellectual hospitality-that is all. You come to me with a new idea. I invite you into the house. Let us see what you have. Let us talk it over. If I do not like your thought, I will bid it a polite "good day." If I do like it, I will say: "Sit down; stay with me, and become a part of the intellectual wealth of my world."

The man who finds a truth lights a torch.

It is impossible for me to conceive of a character more utterly detestable than that of the Hebrew god.

Would God give a bird wings and make it a crime to fly? Would he give me brains and make it a crime to think? Any God that would damn one of his children for the expression of his honest thought wouldn't make a decent thief. When I read a book and don't believe it, I ought to say so. I will do so and take the consequences like a man.