It is a commonplace to assert that science should be independent of politics. By this one usually means that the search for truth, which is the essential function of science, should not be influenced by political interests, which are the interests concerned with the establishment and maintenance of a definite social order or a particular social institution. Politics as the art of government, that is to say, the practice of regulating the social behavior of men, is a function of will and, as such, an activity which necessarily presupposes the conscious or unconscious assumption of values, the realization of which is the purpose of the activity. Science is a function of cognition; its aim is not to govern but to explain. To describe the world is its object. Its independence of politics means in the last analysis, that the scientist must not presuppose any value; consequently he has to restrict himself to an explanation and a description of his object without judging it as good or bad, i.e., as being in conformity with, or contrary to, a presupposed value. This implies that the statements by which a scientist describes and explains the object of his inquiry must not be influenced by values in which he himself believes.