They are mutually contributory. Political Science gives to Sociology facts about the organization and functions of the State, and obtains from it knowledge of the origin of political authority and laws which controlled society. The State in its early stages was more of a social than a political institution, and Giddings is of the opinion that “to teach the theory of the State to men who have not learned the first principles of sociology, is like teaching astronomy or thermodynamics to men who have not learned the Newtonian law of motion.”