Carefully researched and written with extraordinary vitality, this biography of Reinhold Niebuhr reveals the man in all of his humanity, warmth and charm, as well as his intellectual prowess as a theological giant. The author, who knew Niebuhr well, chronicles his career and contributions to ethics, theology and political thought. This classic is of enduring value to students of ethics, philosophy and theology and political thought and to anyone anxious to grasp the essence of this foremost philosophical theologian of the 20th century.