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

All the professors in all the religious colleges in this country rolled into one, would not equal Charles Darwin.

There is no harmony between religion and science. When science was a child, religion sought to strangle it in the cradle. Now that science has attained its youth, and superstition is in its dotage, the trembling, palsied wreck says to the athlete: "Let us be friends."

The myth of hell represents all the meanness, all the revenge, all the selfishness, all the cruelty, all the hatred, all the infamy of which the heart of man is capable.

We need men with moral courage to speak and write their real thoughts, and to stand by their convictions, even to the very death.

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

Let every man teach his son, teach his daughter, that labor is honorable.