War doesn't determine who's right, it determines who's left

We ought to look the world frankly in the face.

To like many people spontaneously and without effort is perhaps the greatest of all sources of personal happiness.

Logic must no more admit a unicorn than zoology can.

Man can be stimulated by hope or driven by fear, but the hope and the fear must be vivid and immediate if they are to be effective without producing weariness.

The greatest challenge to any thinker is stating the problem in a way that will allow a solution.

Anything you're good at contributes to happiness.