The interpretation of dreams is the royal road to a knowledge of the unconscious activities of the mind.

There is a psychological technique which makes it possible to interpret dreams, and ... if that procedure is employed, every dream reveals itself as a psychical structure which has a meaning and which can be inserted at an assignable point in the mental activities of waking life.

No, our science is no illusion. But an illusion it would be to suppose that what science cannot give us we can get elsewhere.

We know less about the sexual life of little girls than of boys. But we need not feel ashamed of this distinction; after all, the sexual life of adult women is a 'dark continent' for psychology.

The time comes when each of us has to give up as illusions the expectations which, in his youth, he pinned upon his fellow-men, and when he may learn how much difficulty and pain has been added to his life by their ill-will.

That which we can't remember, we will repeat.

You can always make a lot of people love one another so long as there are a smaller number outside the group for them to kick.