Being a Deaf person, I enjoy reading about the culture, the history, the outlook of others. That's why I was particulary excited when I got my hands on this book. And while I was interested throughout the book, I found my blood pressure frequently rising as I read the author's biased and one-track-mind approach.
He speaks as if all deaf people are the same and that one language is right for all. I, personally, use the language he speaks of, however, it is simply not healthy to presume all deaf people do as well. The largest thing he fails to even mention once is the fact that the large majority of deaf people became deaf after the age of 18.
That being said, if you're interested in learning nothing more than what this man thinks and his delight in learning a handful of signs and communicating with us less fortunate people (sarcasm), read away. If, on the other hand, you want to truly learn more about the culture and not only what Oliver Sacks believes, click on the back arrow at the top of your screen and continue your search. :o(