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

When a man really believes that it is necessary to do a certain thing to be happy forever, or that a certain belief is necessary to ensure eternal joy, there is in that man no spirit of concession. He divides the whole world into saints and sinners, into believers and unbelievers, into God's sheep and Devil's goats, into people who will be glorified and people who are damned.

Labor is the only prayer that Nature answers: It is the only prayer that deserves an answer—good, honest, noble work.

To give up your individuality is to annihilate yourself.

I am going to put the Bible out of business.

Ignorance worships mystery; reason explains it; the one grovels, the other soars.

It is better to deserve without receiving than to receive without deserving