This is a popular course taught at Yale, brought into book format. It really does read like a college course, rather than a pop psychology text. I didn’t expect to get so deep into some of these concepts. It’s like a Philosophy 101 and World Religions 101 wrapped up in a short book. I think I would have enjoyed the long format course structure with writing assignments and class discussion. One of my biggest takeaways is a lovely Nietzche quote on how sadness and happiness are sisters, twins even, with a direct relationship. His idea was that decreasing one will decrease the other. Can’t have light without dark, basically. A very thought-provoking read!