Contemporary liberalism faces no greater dilemma than deciding how to deal with the resurgence of religious belief. On the one hand, liberals cherish religion, as they cherish all matters of private conscience, and liberal theory holds that the state should do nothing to discourage free religious choice. At the same time, contemporary liberals are coming to view any religious element in public moral discourse as a tool of the radical right for the reshaping of American society, and that reshaping is something liberals want very much to discourage. In truth, liberal politics has always been uncomfortable with religious fervor. If liberals cheered the clerics who marched against segregation and the Vietnam War, it was only because the causes...