Instruct: Classify a given review into positive or negative sentiment.
Query: GEB will change the way you think about the way you think

A true "desert island" tome, GEB will put more wrinkles in your brain with every page you struggle to understand. That struggle is more fulfilling than frustrating, as Hofstadter steadily leads you down a path marked "Artificial Intelligence" to the true destination of Real Intelligence. You will probably want to read it several times, but this book will change the way you think about the way you think.