"Success in the sociologists' aim might lead, in T. S. Eliot's phrase, to "systems so perfect that no one would need to be good." This view forgets that men long ago committed themselves to the endeavor to control their own collective behavior, not only in the ways sanctioned by the churches but in others, by making it to men's interest to do good. And they have increasingly based the endeavor on an understanding of natural laws of human behavior, those of economics, for example. So that the question is not: Shall this kind of control be undertaken? but: Where shall it stop? A sociologist might also argue that his religious critics have more faith in him than in their own doctrine, the doctrine that man is infinitely tough and resourceful and is not easily cheated of his freedom to sin. What God has given no man can take away, certainly no sociologist. More seriously, he might argue that the social sciences are not in train to eliminate morality but to make greater demands of it. A sociology that shows us unsuspected or not hitherto understood ways in which men are bound up with one another invites more refined answers to the question: "Am I my brother's keeper?""