Munger and Buffet both have a remarkable set of experiences. My understanding of reading about both of them (and the book) is that they have a deep understanding of human nature, which is really remarkable. If you read stuff from them through their share holder letters and such, you'll find that they've been saying the same things for literally decades. Which means that they've figured out the core of human nature, figured out how to keep themselves sane and figured out how to lead a good life relatively early on. Besides Munger is very witty, and you crack up quite a bit reading the book.