Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cooper's greatest

Guide is the most brilliant book I've read in years. It amazes me to read some of the other reviews here. Cooper's readers seem to want him to continue to do what he did so brilliantly in Closer and Frisk, when he's outgrown that approach, and written a novel much more complex and deep, but with all the power of his earlier books. Guide proves Cooper is truly one of our greatest, most orginal and innovative writers. I can't recommend this novel highly enough.