Grant others the same rights as you claim for yourself.

It is a blessed thing that in every age some one has had the individuality enough and courage enough to stand by his own convictions.

Nothing could be more dangerous to the existence of this Republic than to introduce religion into politics

The few have said, Think! The many have said, Believe! The first doubt was the womb and cradle of progress, and from the first doubt, man has continued to advance.

Theology is not what we know about God, but what we do not know about Nature.

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

Diderot took the ground that, if orthodox religion be true Christ was guilty of suicide. Having the power to defend himself he should have used it.