The behavior of a human being in sexual matters is often a prototype for the whole of his other modes of reaction in life.

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

The goal of all life is death

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.

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.

A transference neurosis corresponds to a conflict between ego and id, a narcissistic neurosis corresponds to that between between ego and super-ego, and a psychosis to that between ego and outer world.

In the depths of my heart I can’t help being convinced that my dear fellow-men, with a few exceptions, are worthless.