Reinhold Niebuhr (1892-1971) was one of America's foremost twentieth-century religious thinkers and social critics. As pastor of Bethel Evangelical Church in Detroit, he became deeply interested in social problems. He was Professor of Applied Christianity at Union Theological Seminary, remaining there until his retirement. Ultimately, he abandoned his liberal Protestant hopes for the church's moral rule of society and became a Socialist activist. Moral Man and Immoral Society is Niebuhr's eloquent argument for the church's involvement in social reforms as well as a platform for his beliefs that men are sinners, that society is ruled by self-interest, and that history is characterized by irony, not progress.