I have complicated feelings about this book. I don't like Piper's theology, and I think he's a surprisingly poor writer for such a famous one. He definitely has a theological bent, which I think is dangerous when examining the faiths of historical people. It's certainly not a good biography, but being a study of Wilburforce's faith, it was good. He used a lot of primary sources which was nice.

He also made some interesting points about how Christians should approach politics - namely, it is better to fight for/agaisnt something not for the common good, but because a policy offends God. Although at first glance this seems to imply right-wing politics, left-wing christians could just as easily use this logic on what they fight for (like better health care, etc.).