Dreams are the guardians of sleep and not its disturbers.

The motive forces of phantasies are unsatisfied wishes, and every single phantasy is the fulfillment of a wish, a correction of unsatisfying reality.

In human beings pure masculinity or femininity is not to be found either in a psychological or biological sense.

In almost every place where we find totems we also find a law against persons of the same totem having sexual relations with one another and consequently against their marrying. This, then, is 'exogamy', an institution related to totemism.

Another technique for fending off suffering is the employment of the displacements of libido which our mental apparatus permits of and through which its function gains so much in flexibility. The task here is that of shifting the instinctual aims in such a way that they cannot come up against frustration from the external world.

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

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