Every child should be taught that useful work is worship and that intelligent labor is the highest form of prayer.

No one infers a god from the simple, from the known, from what is understood, but from the complex, from the unknown, and incomprehensible. Our ignorance is God; what we know is science.

They say: Belief is important. I say: No, actions are important. Judge by deed, not by creed.

Let us put theology out of religion. Theology has always sent the worst to heaven, the best to hell.

Injustice upon earth renders the justice of of heaven impossible.

As long as every question is answered by the word "God," scientific inquiry is simply impossible.

Whoever imagines himself a favorite with God holds others in contempt.