One of the most difficult tasks men can perform, however much others may despise it, is the invention of good games.

Anyone who wants to know the human psyche will learn next to nothing from experimental psychology. He would be better advised to abandon exact science, put away his scholar's gown, bid farewell to his study, and wander with human heart through the world.

There are cases where psychoanalysis works worse than anything else. But who said that psychoanalysis was to be applied always and everywhere.

It is in applied psychology, if anywhere, that today we should be modest and grant validity to a number of apparently contradictory opinions; for we are still far from having anything like a thorough knowledge of the human psyche, that most challenging field of scientific enquiry. For the present we have merely more or less plausible opinions that defy reconciliation.

The starry vault of heaven is in truth the open book of cosmic projection, in which are reflected the mythologems, i.e., the archetypes. In this vision astrology and alchemy, the two classical functionaries of the psychology of the collective unconscious, join hands.

The only thing we have to fear on this planet is man.

As a child I felt myself to be alone, and I am still, because I know things and must hint at things which others apparently know nothing of, and for the most part do not want to know.