The record of a generous life runs like a vine around the memory of our dead, and every sweet unselfish act is now a perfumed flower.

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

Commerce is the great civilizer. We exchange ideas when we exchange fabrics.

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.

We have at last ascertained that miracles can be perfectly understood; that there is nothing mysterious about them; that they are simply transparent falsehoods.

The church hates a thinker precisely for the same reason a robber dislikes a sheriff, or a thief despises the prosecuting witness.

If the world ever advances beyond what it is today, it must be led by men who express their real opinions.