The Structure and Dynamics of the Psyche (Collected Works of C.G. Jung, Volume 8)
The nature of the psyche reaches into obscurities far beyond the scope of our understanding.
It contains as many riddles as the universe with its galactic systems, before whose majestic configurations only a mind lacking in imagination can fail to admit its own insufficiency.
This extreme uncertainty of human comprehension makes the intellectualistic hubbub not only ridiculous, but also deplorably dull. ~Carl Jung, CW 8, Para 815