and their combinations in sociology are far the most complex which we have to deal with. In the fourth place, any natural philosopher who should stop, after stating the law of falling bodies, to warn mothers not to let their children fall out of the window, would make himself ridiculous. Just so a sociologist who should attach moral applications and practical maxims to his investigations would entirely miss his proper business. There is the force of gravity as a fact in the world. If we understand this, the necessity of care to conform to the action of gravity meets us at every step in our private life and personal experience. The fact in sociology is in no wise different.
If, for instance, we take political economy, that science does not teach an individual how to get rich. It is a social science. It treats of the laws of the material welfare of human societies. It is, therefore, only one science among all the sciences which inform us about the laws and conditions of our life on earth. Education has for its object to give a man knowledge of the conditions and laws of living, so that, in any case in which the individual stands face to face with the necessity of deciding what to do, if he is an educated man,
