Dogs love their friends and bite their enemies, quite unlike people, who are incapable of pure love and always have to mix love and hate.

Religion (is) a universal obsessional neurosis.

The aim of psychoanalysis is to relieve people of their neurotic unhappiness so that they can be normally unhappy.

A religion, even if it calls itself a religion of love, must be hard and unloving to those who do not belong to it.

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

It is easy to see that the ego is that part of the id which has been modified by the direct influence of the external world.

A man like me cannot live without a hobby-horse, a consuming passion - in Schiller's words a tyrant. I have found my tyrant, and in his service I know no limits. My tyrant is psychology. It has always been my distant, beckoning goal and now since I have hit upon the neuroses, it has come so much the nearer.