This volume offers a compelling introduction to the life, times, and theological thought of H. Richard and Reinhold Niebuhr--the two most important American theologians of the twentieth century. Although the Niebuhr brothers shared the same heritage and experienced many of the same formative moments, their thought diverged at key points as their lives and careers developed. Scott R. Paeth's expert introduction to the Niebuhr brothers explores this history and the enduring influence of the Niebuhrs on religious and political thought. This lively introduction, which includes witty illustrations from Ron Hill, is an essential resource for understanding these enduring theological figures.