Our unconscious, then, does not believe in its own death; it behaves as if it were immortal. It knows nothing that is negative; in it contradictories coincide. This may be the secret of heroism.

Man has, as it were, become a kind of prosthetic God.

Civilized society is perpetually menaced with disintegration through this primary hostility of men towards one another.

Tobacco is the only excuse for Columbus's misadventure in discovering America.

Woe to you, my Princess, when I come. I will kiss you quite red and feed you till you are plump. And if you are froward, you shall see who is the stronger, a gentle little girl who doesn't eat enough, or a big wild man who has cocaine in his body. -- A love letter from Freud to his fiancée.

I regard myself as one of the most dangerous enemies of religion

The genitals themselves have not undergone the development of the rest of the human form in the direction of beauty.