The communal life of human beings had . . . a two-fold foundation: the compulsion to work, which was created by external necessity, and the power of love.

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

One becomes gradually accustomed to a new realization of the nature of 'happiness': one has to assume happiness when Fate does not carry out all its threats simultaneously.

The effect of the consolations of religion may be compared to that of a narcotic.

When one does not have what one wants, one must want what one has.

I no longer believe that William Shakespeare the actor from Stratford was the author of the works that have been ascribed to him.

We know less about the sexual life of little girls than of boys. But we need not feel ashamed of this distinction; after all, the sexual life of adult women is a 'dark continent' for psychology.