How about this for deep research:

“Liber Novus this presents a series of active imaginations together with Jung’s attempt to understand their significance. This work of understanding encompasses a number of interlinked threads: an attempt to understand himself and to integrate and develop various components of his personality; an attempt to understand the structure of the human personality in general; an attempt to understand the relation of the individual to present-day society and to the community of the dead; an attempt to understand the psychological and historical effects of Christianity; and an attempt to traps the future religious development of the West. Jung discusses many other themes in the work, including the nature of self-knowledge; the nature of the soul; the relations of thinking and feeling and the psychological types; the relation of inner and outer masculinity and femininity; the uniting of opposites; solitude; the value of scholarship and learning; the status of science; the significance of symbols and how they are to be understood; the meaning of the war; madness, divine madness, and psychiatry; how the Imitation of Christ is to be understood today; the death of God; the historical significance of Nietzsche, and the relation of magic and reason.”

Wow. That pretty much covers all of the areas of study that I can think of. Just “self-knowledge” and nature of the soul would be plenty!