Life has always seemed to me like a plant that lives on its rhizome. Its true life is invisible, hidden in the rhizome. The part that appears above ground lasts only a single summer. Then it withers away an ephemeral apparition. When we think of the unending growth and decay of life and civilizations, we cannot escape the impression of absolute nullity. Yet I have never lost a sense of something that lives and endures underneath the eternal flux. What we see is the blossom, which passes. The rhizome remains.
In the end the only events in my life worth telling are those when the imperishable world irrupted into this transitory one. That is why I speak chiefly of inner experiences, amongst which I include my dreams and visions. These form the prima materia of my scientific work. They were the fiery magma out of which the stone that had to be worked was crystallized.
All other memories of travels, people and my surroundings have paled beside these interior happenings. Many people have participated in the story of our times and written about it; if the reader wants an account of that, let him turn to them or get somebody to tell it to him. Recollection of the outward events of my life has largely faded or disappeared. But my encounters with the "other" reality, my bouts with the unconscious, are indelibly engraved upon my memory. In that realm there has always been wealth in abundance, and everything else has lost importance by comparison.