What nonfiction book had an impact on you?

Travels by Michael Crichton. It's his autobiography. In this book, Crichton recounts his experiences and examines the insights he gained into life as a result. He tells about attending Harvard Medical School, climbing Mt. Kilimanjaro, and directing Sean Connery in a movie, among many other things. Even people who don't care for his fiction can get something from this book. Michael Crichton lead a fascinating life that was over much too soon.