The science of logic never made a man reason rightly, and the science of ethics never made a man behave rightly. The most such sciences can do is to help us to catch ourselves up and check ourselves, if we start to reason or to behave wrongly; and to criticise ourselves more articulately after we have made mistakes.

Tension is a habit. Relaxing is a habit. Bad habits can be broken, good habits formed.

You may not get everything you dream about, but you will never get anything you don't dream about.

In the dim background of our mind we know meanwhile what we ought to be doing: getting up, dressing ourselves, answering the person who has spoken to us, trying to make the next step in our reasoning. But somehow we cannot start.

I take it that no man is educated who has never dallied with the thought of suicide.

For the moment, what we attend to is reality.

Good-humor is a philosophic state of mind; it seems to say to Nature that we take her no more seriously than she takes us. I maintain that one should always talk of philosophy with a smile.