A great book for any Christian to work through. Pastor Piper effectively combats both laziness in thinking and pride in thinking. The book pushed me to work harder at thinking as I read and write. His chapter on the connection between faith and thinking was a bit weak. He seemed to be saying that you must be able to think to have faith. Still the book was superb and has already changed the way I study. As usual, Pastor Piper aims for our affections. He wants thinking to be an expression of our love for God and love for men.