"Of all the tyrannies that affect mankind, tyranny in religion is the worst," declared Thomas Paine, adding, "every other species of tyranny is limited to the world we live in; but this attempts to stride beyond the grave, and seeks to pursue us into eternity." Paine's years of study and reflection on the role of religion in society culminated with his final work, The Age of Reason. This coolly reasoned polemic influenced religious thinking throughout...