Beauty is the child of love.

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.

The greatest task before civilization at present is to make machines what they ought to be, the slaves, instead of the masters of men.

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.

I always seem to have a vague feeling that he is a Satan among musicians, a fallen angel in the darkness who is perpetually seeking to fight his way back to happiness.

Dancing is the loftiest, the most moving, the most beautiful of the arts, because it is no mere translation or abstraction from life; it is life itself.

A man must not swallow more beliefs than he can digest.