When people with strong religious convictions live alongside people who hold different but equally strong views, the results can be explosive. That’s not only a matter of historical record, but a global tragedy as fresh and raw as today’s headlines. The United States, however, somehow defies both human history and faith-based brutality all too common in the contemporary world. What is America’s secret to maintaining social peace, relatively high levels of religious engagement, and increasing diversity? To answer that question, American Grace: How Religion Divides and Unites Us, just published by Simon & Schuster, draws on the most comprehensive surveys yet on American religion and public life, taken under the auspices of the Templeton-funded Faith Matters project.