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, among 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.
Inner experiences also set their seal on the outward events that came my way and assumed importance for me in youth or later on. I early arrived at the insight that when no answer comes from within to the problems and complexities of life, they ultimately mean very little. Outward circumstances are no substitute for inner experience. Therefore my life has been singularly poor in outward happenings. I cannot tell much about them, for it would strike me as hollow and insubstantial. I can understand myself only in the light of inner happenings. It is these that make up the singularity of my life, and with these my autobiography deals.