Not to know the past is to be in bondage to it, while to remember, to know, is to be set free.

Civilization has little to fear from educated people and brain-workers. In them the replacement of religious motives for civilized behaviors by other, secular motives, would proceed unobtrusively. . . .

I consider it a good rule for letter-writing to leave unmentioned what the recipient already knows, and instead tell him something new.

A religion, even if it calls itself a religion of love, must be hard and unloving to those who do not belong to it.

Love in the form of longing and deprivation lowers the self regard.

There is no doubt that the resistance of the conscious and unconscious ego operates under the sway of the pleasure principle: it seeks to avoid the unpleasure which would be produced by the liberation of the repressed.

Man has, as it were, become a kind of prosthetic God. When he puts on all his auxiliary organs, he is truly magnificent; but those organs have not grown on him and they still give him much trouble at times.