The Promised Land always lies on the other side of a Wilderness.

There has never been any country at every moment so virtuous and so wise that it has not sometimes needed to be saved from itself.

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

What we call progress is the exchange of one nuisance for another nuisance.

'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.

For every fresh stage in our lives we need a fresh education, and there is no stage for which so little educational preparation is made as that which follows the reproductive period.

All civilization has from time to time become a thin crust over a volcano of revolution.

Birth-control is effecting, and promising to effect, many functions in our social life.

Every man of genius sees the world at a different angle from his fellows, and there is his tragedy.

Failing to find in women exactly the same kind of sexual emotions, as they find in themselves, men have concluded that there are none there at all.

Man lives by imagination.

Men who know themselves are no longer fools. They stand on the threshold of the door of Wisdom.

No act can be quite so intimate as the sexual embrace.

Of woman as a real human being, with sexual needs and sexual responsibilities, morality has often known nothing.

One can know nothing of giving aught that is worthy to give unless one also knows how to take.

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.

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

The more rapidly a civilization progresses, the sooner it dies for another to rise in its place.

The omnipresent process of sex, as it is woven into the whole texture of our man's or woman's body, is the pattern of all the process of our life.