You know a John Piper book is bad when fans of John Piper don't think it's very good. Such is the case with this book. At the beginning, Piper names a few other books written about how Christians are to love the Lord with their minds. Read those instead. Read JP Moreland's and James Sire's books. This is not a good book. It is written poorly and though he does say things that are true, none of them are significant revelations necessary for the reading of this book. Do every 3 paragraphs need a new heading? No. John Piper thinks every 2-3 paragraphs need a heading. I can't explain why. In his impatience to spout all of his repetitive comments, Piper can't even follow his own train of thought. He says he is going to return to his 1 Corinthians passage at the end of the next chapter; two pages into the next chapter, he is back to it, saying the same thing about it he has been saying for the last three chapters. The book is quite redundant. Piper tries to do something "different" by focusing on a Biblical defense of loving God with the intellect, or at least he says that's what this is about. It ends up being mostly a "thinking is good for Christians after all" apologetic, harping on a couple of already self-explanatory passages. He doesn't reveal anything new on the subject, and the notion a substantial portion of genuine Christianity doesn't think Christians should use their brains is fatuous ... isn't it? Do real Christians still doubt Jesus wasn't telling a joke when He said "love God with your mind"? If so, as I said, read Moreland and Sire to find out why Jesus wasn't telling a joke. If you want a better "life of the mind" book, alternatively, read Father James V. Schall's books, esp. The Life of the Mind. It's a far more Christian book than this intellectual abysm.