H. Richard Nieburh’s major work, which he did not live to complete, was to be on theological ethics. Based on the published and unpublished writings that Niebuhr completed during the last decade of his life, Roots of Relational Ethics demonstrates that Niebuhr’s conception of responsibility was the culmination of his thought about self, God, Christ, the church, ethics and decision-making, and social evil. R. Melvin Keiser examines the limitations and potential of Niebuhr’s use of responsibility in comparison with relevant themes in liberation and feminist theological ethics. He suggests that Niebuhr’s mature work can contribute to the alleviation of environmental exploitation, sexism, anti-Judaims, war, racism, and classism.