Unique among nations, America is deeply religious, religiously diverse, and remarkably tolerant. In recent decades, however, the nation’s religious landscape has undergone several seismic shocks. American Grace is an authoritative, fascinating examination of what precipitated these changes and the role that religion plays in contemporary American society. Although there is growing polarization between religious conservatives and secular liberals today, at the same time personal interfaith ties are strengthening. Interfaith marriage has increased, and religious identities have become more fluid. More people than ever are friendly with someone of a different faith or no faith at all. Putnam and Campbell show how this denser web of personal ties brings greater interfaith tolerance, despite the so-called culture wars. Based on two of the most comprehensive surveys ever conducted on religion and public life in America (and with a new epilogue based on a third survey), American Grace is an indispensable book about American religious life, essential for understanding our nation today.