We cannot be sure that we ought not to regard the most criminal country as that which in some aspects possesses the highest civilization.

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

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

We cannot be sure that we ought not to regard the most criminal country as that which in some aspects possesses the highest civilization.

Charm" — which means the power to effect work without employing brute force — is indispensable to women. Charm is a woman's strength just as strength is a man's charm.

At the present day the crude theory of the sexual impulse held on one side, and the ignorant rejection of theory altogether on the other side, are beginning to be seen as both alike unjustified.

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