Psychological Types by C.G. Jung
Not sure I should even be marking this as done, as I mostly just scanned it! lol This is a veeerrry densely packed book that reads somewhat like a college textbook. I suspect it’s one that would need multiple readings to really interpret Jung’s full meaning. However, it gives a good, in-depth look at Jung’s interpretation of the dichotomies in human nature and the human psyche.