A difficult book, in part because Adler isn't all that good at expressing his ideas: he's a practitioner, not a writer, and it shows. Further, I believe Understanding Human Nature has more in direct value than direct value: the reader has to move from what the book teaches to a layer of second-order insights. I'll explain what I mean in a moment. First a quick summary of the book's core themes and ideas. According to Adler, we all have a psyche, formed and largely fixed in childhood, and that psyche has an ulterior psychological goal. For most of us, unfortunately, that goal takes the form of striving for power, control, attention, or superiority. Throughout the book Adler gives examples where peoples' psyche-driven strivings cause suffering, both for themselves as well as everyone else in their blast radius. Most of us will likely resist Adler's claim that to understand other people and their motivations you must first understand their psyches' "ulter...