The brighter the light, the darker the shadow.

The dynamic principle of fantasy is play, a characteristic also of the child, and as such it appears inconsistent with the principle of serious work. But without this playing with fantasy no creative work has ever yet come to birth. The debt we owe to the play of imagination is incalculable. It is therefore short-sighted to treat fantasy, on account of its risky or unacceptable nature, as a thing of little worth.

An old man who cannot bid farewell to life appears as feeble and sickly as the young man who is unable to embrace it.

You always become the thing you fight the most.

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

Psychiatrists classify a person as neurotic if he suffers from his problems in living, and a psychotic if he makes others suffer.

Masses are always breeding grounds of psychic epidemics.