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.

There is an intellectual function in us which demands unity, connection and intelligibility from any material, whether of perception or thought, that comes within its grasp; and if, as a result of special circumstances, it is unable to establish a true connection, it does not hesitate to fabricate a false one.

We must reckon with the possibility that something in the nature of the sexual instinct itself is unfavorable to the realization of complete satisfaction.

The ego represents what we call reason and sanity, in contrast to the id which contains the passions.

In general people experience their present naively, as it were, without being able to form an estimate of its contents; they have first to put themselves at a distance from it - the present, that is to say, must have become the past - before it can yield points of vantage from which to judge the future.

Adolescent stage in the development of the human race from which humanity should free itself.

A civilization which leaves so large a number of its participants unsatisfied and drives them into revolt neither has nor deserves the prospect of a lasting existence.