One must learn to give up momentary, uncertain and destructive pleasure for delayed, restrained, but dependable pleasure.

The wish to be able to fly is to be understood as nothing else than a longing to be capable of sexual performance.

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.

The creative writer does the same as the child at play; he creates a world of fantasy which he takes very seriously.

From error to error one discovers the entire truth.

The adoption of the required attitude of mind towards ideas that seem to emerge "of their own free will" and the abandonment of the critical function that is normally in operation against them seem to be hard of achievement for some people. The "involuntary thoughts" are liable to release a most violent resistance, which seeks to prevent their emergence. If we may trust that great poet and philosopher Friedrich Schiller, however, poetic creation must demand an exactly similar attitude.

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.