The chief source of man's inhumanity to man seems to be the tribal limits of his sense of obligation to other men.

All human sin seems so much worse in its consequences than in its intentions.

God, give us grace to accept with serenity the things that cannot be changed, courage to change the things which should be changed, and the wisdom to distinguish the one from the other. This prayer was first printed in a monthly bulletin of the Federal Council of Churches and has become enormously popular. It has been circulated in millions of copies.

What is so funny about us is precisely that we take ourselves too seriously. Laughter is the same and healthy response to the innocent foibles of men; and even to some which are not innocent.

The mastery of nature is vainly believed to be an adequate substitute for self mastery.

Religion mustn't interfere with the state - so one of the basic Democratic principles as we know it in America is the separation of church and state.

One of the most pathetic aspects of human history is that every civilization expresses itself most pretentiously, compounds its partial and universal values most convincingly, and claims immortality for its finite existence at the very moment when the decay which leads to death has already begun.