What we call 'morals' is simply blind obedience to words of command.

All the art of living lies in a fine mingling of letting go and holding on.

To live remains an art which everyone must learn, and which no one can teach.

I regard sex as the central problem of life. And now that the problem of religion has practically been settled, and that the problem of labor has at least been placed on a practical foundation, the question of sex—with the racial questions that rest on it—stands before the coming generations as the chief problem for solution. Sex lies at the root of life, and we can never learn to reverence life until we know how to understand sex.

It has always been difficult for Man to realize that his life is all an art. It has been more difficult to conceive it so than to act it so. For that is always how he has more or less acted it.

All arguments are meaningless until we gain personal experience. One must win one's own place in the spiritual world painfully and alone. There is no other way of salvation. The Promised Land always lies on the other side of a wilderness.

The mathematician has reached the highest rung on the ladder of human thought.