Liberty sustains the same relation to mind that space does to matter.

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.

The man who accepts opinions because they have been entertained by distinguished people, is a mental snob.

Intelligence is the only moral guide.

He was a worshiper of liberty, a friend of the oppressed. A thousand times I have heard him quote these words: 'For Justice all place a temple, and all season, summer.' He believed that happiness is the only good, reason the only torch, justice the only worship, humanity the only religion, and love the only priest. He added to the sum of human joy; and were every one to whom he did some loving service to bring a blossom to his grave, he would sleep tonight beneath a wilderness of flowers. . . .

Belief is not a matter of choice, but of conviction.

To the wise man, to the wise nation, the mistakes of the past are the torches of the present.