He acknowledges the slow and steady transformation of the Church from its darker, medieval roots to a more pluralist and inclusive institution, charting along the way stories of powerful Catholic leaders (Pope John XXIII, Thomas Merton, John F. Kennedy) and historical milestones like Vatican II. These individuals and events represent progress for Carroll, a former priest, and as he considers the new meaning of belief in a world that is increasingly as secular as it is fundamentalist, he shows why the world needs a Church that is committed to faith and renewal.