Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Good overview of tai chi

This book was recommended by my sensei and it is well worth the price. It talks about the principles of the art and discusses the inter-relationship of Chinese medicine, martial arts and art forms (i.e. poetry, flower arranging, calligraphy).It also intelligently discusses the various styles and forms of tai chi.The description of chi and it's uses was interesting, but I'm not really sure I buy into the author's philosophy, but this is just a small part of a very comprehensive book.The book is intended for people who are studying the art of tai chi, and should not be purchased as a "how to" book. It does discuss various postures and their effect on joints and energy movement, but it does not attempt to actually teach the forms. In my opinion, this is it's greatest strength.