Thoroughly surveying various social behaviors and frameworks, Simler and Hanson paint their human motive picture with clear structures and delight examples. Seen in countless works over the centuries, the thesis is as old as time: every man for himself. This time around though, the authors focus on concrete and detailed results, hand holding readers to walk through every myths and norms we now see as the direct or indirect but inevitable consequences of human selfishness. However, that should not the end of the day. Early confucian philosopher Xunzi is known for the same arguments, but I also remind myself that Confucius’ remark that the greatest achievement of a person is to withdraw and be indifferent to those selfish motives hence becoming a saint. Anyway, I recommend this book with great enthusiasm. Also, this is my first review on Audible, it is that good.