Instruct: Classify Amazon reviews into positive or negative sentiment
Query: very informative and useful

I have been researching TM for the past few months. I have resisted going to class because it is quite expensive and because I do not believe, as the expert on TM Robert Roth claimed , -that TM could not be learnt from a book or tape. This is an ideal book. I am quite convinced that TM is just a way to invoke the power and wisdom of the subconscious mind. There are other techniques - affirmative prayer, auto-suggestion, Silva Mind Control and self-hypnosis and they are just as effective and useful. TM is good but it should be not considered infallible magic.