Fear is religion, courage is science.

To be like other people is to be unlike ourselves.

Whenever a man believes that he has the exact truth from God, there is in that man no spirit of compromise. He has not the modesty born of the imperfections of human nature; he has the arrogance of theological certainty and the tyranny born of ignorant assurance. Believing himself to be the slave of God, he imitates his master, and of all tyrants the worst is a slave in power.

Whoever increases the sum of human joy, is a worshiper. He who adds to the sum of human misery, is a blasphemer.

I do not see how it is possible for an intelligent human being to conclude that the Song of Solomon is the work of God, and that the tragedy of Lear was the work of an uninspired man.

If God objected to [people with various handicaps], he ought not have created such people.

I am simply in favor of intellectual hospitality-that is all. You come to me with a new idea. I invite you into the house. Let us see what you have. Let us talk it over. If I do not like your thought, I will bid it a polite "good day." If I do like it, I will say: "Sit down; stay with me, and become a part of the intellectual wealth of my world."