Hmm. I'm not sure about books. I've only seen a video of one of his lectures: http://www.amazon.com/Universe-Nothing-There-Something-Rathe... looks good from what I can tell from the reviews, but I can't personally vouch for the book. If you're looking for more of the stars-are-you spirituality kind of thing, and you thought that that's what he was about, then I'm afraid that I may have deluded you. His books are about an origin to everything by defining what nothing is, and how everything comes from nothing. The second video is a really good, succinct definition of nothing, and how something comes from nothing, but the lecture (if I remember correctly) is more in depth. He's also a proponent of the Standard Model, by the way, and is derisive towards string theory.