"The destroyer of weeds, thistles, and thorns is a benefactor whether he soweth grain or not."
"Let us account for all we see by the facts we know. If there are things for which we cannot account, let us wait for light. To account for anything by supernatural agencies is, in fact to say that we do not know. Theology is not what we know about God, but what we do not know about Nature."
"Theology is a superstition—Humanity a religion."
"The telescope destroyed the firmament, did away with the heaven of the New Testament, rendered the ascension of our Lord and the assumption of his Mother infinitely absurd, crumbled to chaos the gates and palaces of the New Jerusalem, and in their places gave to man a wilderness of worlds."
"If God created the universe, there was a time when he commenced to create. Back of that commencement there must have been an eternity. In that eternity what was this God doing? He certainly did not think. There was nothing to think about. He did not remember. Nothing had ever happened. What did he do? Can you imagine anything more absurd than an infinite intelligence in infinite nothing wasting an eternity?"
"To hate man and worship God seems to be the sum of all the creeds."
"The sciences are not sectarian. People do not persecute each other on account of disagreements in mathematics. Families are not divided about botany, and astronomy does not even tend to make a man hate his father and mother. It is what people do not know, that they persecute each other about. Science will bring, not a sword, but peace."
"Not one of the learned gentlemen who pretend that the Mosaic laws are filled with justice and intelligence, would live, for a moment, in any country where such laws were in force."
"Let us forget that we are Baptists, Methodists, Catholics, Presbyterians, or Free-thinkers, and remember only that we are men and women. After all, man and woman are the highest possible titles. All other names belittle us, and show that we have, to a certain extent, given up our individuality, and have consented to wear the collar of authority—that we are followers. Throwing away these names, let us examine these questions not as partisans, but as human beings with hopes and fears in common."
"Arguments cannot be answered by personal abuse; there is no logic in slander, and falsehood, in the long run, defeats itself."