Autonomic psychic contents thus are quite common experiences for us... The more complicated they are, the more they have the character of personalities... Such fragmentary systems appear especially in mental diseases, in cases of psychogenic splitting of the personality
This passage establishes the foundational thesis that autonomous psychic contents form personality-like fragmentary systems, grounding the concept in clinical and phenomenological evidence.
, The Secret of the Golden Flower: A Chinese Book of Life, 1931thesis