So in every individual the two trends, one towards personal happiness and the other unity with the rest of humanity, must contend with each other.

Plaque was placed on 6 May 1977 at Bellevue (a house on the slopes of the Wienerwald) where the Freud family spent their summers.

It is a predisposition of human nature to consider an unpleasant idea untrue, and then it is easy to find arguments against it.

Poets are masters of us ordinary men, in knowledge of the mind, because they drink at streams which we have not yet made accessible to science.

If you want your wife to listen to you, then talk to another woman; she will be all ears.

Now it is nothing but torture.

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.