I just finished this book. I liked it for its simplicity and for the quality of the people quoted. There are Darwin, Buffett and Munger of course, but also Richard Feynman, Albert Einstein, Sherlock Holmes, Confucius, Oscar Wilde just to name a few. All threaded artfully on a fairly consistent philosophy that can be described as insightful rationality, the power of systems, or similar.
I liked that the portions that pertain to investing were also concise and consistent along the lines of Warren Buffett's ideas, but supported and fleshed out by other thinkers.