There is no such thing as morality or immorality in thought. There is immoral emotion.

The fact is, that civilization requires slaves. Human slavery is wrong, insecure, and demoralizing. On mechanical slavery, on the slavery of the machine, the future of the world depends.

So much had been surrendered! And to such little purpose! There had been mad wilful rejections, monstrous forms of self-torture and self-denial, whose origin was fear and whose result was a degradation infinitely more terrible than that fancied degradation from which, in their ignorance, they had sought to escape.

One should always be in love. That is the reason one should never marry.

The secret to life is to enjoy the pleasure of being terribly, terribly deceived.

A passion for pleasure is the secret of remaining young.

America is the noisiest country that ever existed. One is waked up in the morning, not by the singing of the nightingale, but by the steam whistle.