To me dreams are part of nature, which harbors no intention to deceive but expresses something as best it can.

In such doubtful matters, where you have to work as a pioneer, you must be able to put some trust in your intuition and follow your feeling even at the risk of going wrong.

The highest, most decisive experience is to be alone with one's own self. You must be alone to find out what supports you, when you find that you can not support yourself. Only this experience can give you an indestructible foundation.

During my medical education at the University of Basle I found vivisection horrible, barbarous and above all unnecessary

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.

The greatest tragedy of the family is the unlived lives of the parents.

Sentimentality is a superstructure covering brutality.