One of the foremost philsophers and theologians of the twentieth century, Reinhold Niebuhr was for many years a Professor at Union Theological Seminary, New York City. He is the author of many classics in their field, including The Nature and Destiny of Man, Moral Man and Immoral Society, The Children of Light and the Children of Darkness, and Discerning the Signs of Our Times. He was also the founding editor of the publication Christianity and Crisis.