Meekness is the mask of malice.

Intellectual liberty [is] the right to think right and the right to think wrong. Thought is the means by which we endeavor to arrive at truth.

If this religion is true, then there is only one Savior, only one narrow path to life. Christianity cannot live in peace with any other religion.

Prayer is of no avail. The lightning falls on the just and the unjust in accordance with natural laws.

Give to every human being every right that you claim for yourself.

It seems to me impossible for a civilized man to love or worship, or respect the God of the Old Testament. A really civilized man, a really civilized woman, must hold such a God in abhorrence and contempt... In the New Testament, death is not the end, but the beginning of punishment that has no end. In the New Testament the malice of God is infinite and the hunger of his revenge eternal... This frightful dogma, this infinite lie, made me the implacable enemy of Christianity. The truth is that this belief in eternal pain has been the real persecutor.

A miracle is the badge and brand of fraud. ... No intelligent, honest man ever pretended to perform a miracle, and never will.