Robert Putnam changed the way we think about the fabric of American society with his hugely influential 2000 bestseller, Bowling Alone. Now, the renowned Harvard political scientist, along with coauthor David Campbell of Notre Dame, will change the way we think about religion in America with AMERICAN GRACE: How Religion Divides and Unites Us (Simon & Schuster; October 5, 2010; $30.00). Drawing on the two most comprehensive surveys ever conducted on religion and public life in America (specially commissioned for this book) and a dozen in-depth portraits of diverse congregations, Putnam and Campbell go to the heart of the religious...