The Relation of Sociology to Social Reform.--From what has been said it is also evident that sociology must not be confused with any particular social reform movement or with the movement for social reform in general. Sociology, as a science, cannot afford to be developed in the interest of any social reform. Certain social reforms, sociology may give its approval to; others it may designate as unwise; but this approval or disapproval will be simply incidental to its discovery of the full truth about human social relations. This is not saying, of course, that social theory should be divorced from social practice, or that the knowledge which sociology and the other social sciences offer concerning human society has no practical bearing upon present social conditions. On the contrary, while all science aims abstractly at the truth, all science is practical also in a deeper sense. No science would ever have been developed if it were not conceived that the knowledge which it discovers will ultimately be of benefit to man. All science exists, therefore, to benefit man, to enable him to master his environment, and the social sciences not less than the other sciences. The physical sciences have already enabled man to attain to a considerable mastery over his physical environment. When the social sciences have been developed it is safe to say that they will enable man not less to master his social environment. Therefore, while sociology and the special social sciences present as yet no program for action, aiming simply at the discovery of the abstract truth, they will undoubtedly in time bring about vast changes for the betterment of social conditions. SELECT REFERENCES _For Brief Reading:_ WARD, _Outlines of Sociology,_ Chaps. I-VIII. ROSS, _The foundations of Sociology,_ Chaps. I and II. DEALEY, _Sociology, Its simpler Teachings and Applications,_ Chap. I. _For More Extended Reading:_ GIDDINGS, _The Principles of Sociology,_ 3d edition. SMALL, _General Sociology._ SPENCER, _The Study of Sociology._ STUCKENBERG, _Sociology: The Science of Human Society._ WARD, _Pure Sociology._ _American Journal of Sociology_, many articles. For a fairly extensive bibliography on sociology, consult Howard's General Sociology: An Analytical Reference Syllabus. CHAPTER II THE BEARING OF THE THEORY OF EVOLUTION UPON SOCIAL PROBLEMS Since Darwin wrote his _Origin of Species_ all the sciences in any way connected with biology have been profoundly influenced by his theory of evolution. It is important that the student of sociology, therefore, should understand at the outset something of the bearing of Darwin's theory upon social problems.