"Not until 1948, when I entered Crozer Theological Seminary in Chester, Pennsylvania, did I begin a serious intellectual quest for a method to eliminate social evil...I came early to Walter Rauschenbusch's Christianity and the Social Crisis, which left an indelible imprint on my thinking by giving me a theological basis for the social concern which had already grown up in me as a result of my early experiences. Of course there were points at which I differed with Rauschenbusch. I felt that he had fallen victim to the nineteenth-century "cult of inevitable progress" which led him to a superficial optimism concerning man's nature. Moreover, he came perilously close to identifying the Kingdom of God with a particular social and economic system-a tendency which should never befall the Church. But in spite of these shortcomings Rauschenbusch had done a great service for the Christian Church by insisting that the gospel deals with the whole man-not only his soul but his body; not only his spiritual well-being but his material well-being. It has been my conviction ever since reading Rauschenbusch that any religion that professes concern for the souls of men and is not equally concerned about the slums that damn them, the economic conditions that strangle them, and the social conditions that cripple them is a spiritually moribund religion only waiting for the day to be buried."