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

Jealousy, that dragon which slays love under the pretence of keeping it alive.

The absence of flaw in beauty is itself a flaw.

There is held to be no surer test of civilization than the increase per head of the consumption of alcohol and tobacco. Yet alcohol and tobacco are recognizable poisons, so that their consumption has only to be carried far enough to destroy civilization altogether.

Education, whatever else it should or should not be, must be an inoculation against the poisons of life and an adequate equipment in knowledge and skill for meeting the chances of life.

Had there been a Lunatic Asylum in the suburbs of Jerusalem, Jesus Christ would infallibly have been shut up in it at the outset of his public career. That interview with Satan on a pinnacle of the Temple would alone have damned him, and everything that happened after could have confirmed the diagnosis. The whole religious complexion of the modern world is due to the absence from Jerusalem of a Lunatic Asylum.