The Rev. Paul B. Raushenbush is the Associate Dean of Religious Life and the Chapel at Princeton University and former editor at Beliefnet. He recently edited the 100th anniversary edition of Christianity and the Social Crisis in the 21st Century, written by his great-grandfather Walter Rauschenbusch. Rauschenbusch was a major proponent of the social gospel, a Christian philosophy which inspired a century of social activism on behalf of the poor aimed at transforming society to reflect God’s will on earth as it is in heaven.