I have bought about 4 or 5 copies of this book throughout my life. I gave a few away and left one at an airport one time, hoping that someone else picked it up and found it useful. This book helped me quit cigarettes. It is just a conversation between a guy and a gorilla, but it is really so much more than that. Their conversation questions everything you learned growing up in a way that can’t be explained until you start reading this book. David Quinn is a genius. I love Ishmael and recommend that everyone read it.