How should the church relate to the world? For over seven decades, the classic categories of Christ and Culture have monopolized Christian answers to this question. Nearly everyone bought into H. Richard Niebuhr's lofty, world-transforming vision. And now that everyone's trying to make the world better, we keep clashing about how to do so. We all want God's will to be done on earth as in heaven, but deep disagreements about how to get there keep fracturing...