I hate above all things a cross man. What right has he to murder the sunshine of a day? What right has he to assassinate the Joy of life? When you go home, you ought to go like a ray of light-so that it will, even in the night, burst out of the doors and windows and illuminate the darkness.

In nature there are neither rewards nor punishments; there are consequences.

I found that the clergy did not understand their own book.

Honest investigation is utterly impossible within the pale of any church, for the reason, that if you think the church is right you will not investigate, and if you think it wrong, the church will investigate you.

Love is the magician, the enchanter, that changes worthless things to joy, and makes right royal kings and queens of common clay. It is the perfume of that wondrous flower, the heart, and without that sacred passion, that divine swoon, we are less than beasts; but with it, earth is heaven, and we are gods.

No man with a sense of humor ever founded a religion.

Just to the extent that the Bible was appealed to in matters of science, science was retarded; and just to the extent that science has been appealed to in matters of religion, religion has advanced - so that now the object of intelligent religionists is to adopt a creed that will bear the test and criticism of science.