Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent!

I liked this book as much as I liked Greene's "Art of Seduction". The author walks the same path of analyzing historical events and people delving deeply into their psychological nature and provides examples taken from life in order to make a point.This is a great book even if the reader is not interested in gaining power over others. It is a very interesting and fascinating read, and as always with Greene's books I couldn't put it down. The author is clearly very well read and knows what he is talking about.