Instruct: Classify Amazon reviews into positive or negative sentiment
Query: there are far better books on this subject than this one

I love books on this topic, but I hated this book in particular. I put it down about 3/4 of the way through. The author says all sorts of questionable things that made me suspicious. For example, he says that the only way to become enlightened is to study with an enlightened Buddhist master, and that there is only one such enlightened Buddhist master in the world. So it seems to me that the author is saying the the reader will probably never reach enlightenment, which for me is an overly-pessimistic viewpoint. Also, the book is too theoretical and doesn't make much effort to tie the theory into anything that even remotely relates to the real world. For a much better book on this subject, I'd recommend "The Book on the Taboo Against Knowing Who You Are" by Alan Watts Another book that I also highly recommend is Robert Persig's "Zen and the Art of Motorcycle Maintenance"