each other in such a way as to produce class hatreds and hostilities. As the old national jealousies, which used to be the lines on which war was waged, lose their distinctness, class jealousies threaten to take their place. Political and social events which occur on one side of the globe now affect the interests of population on the other side of the globe. Forces which come into action in one part of human society rest not until they have reached all human society. The brotherhood of man is coming to be a reality of such distinct and positive character that we find it a practical question of the greatest moment what kind of creatures some of these hitherto neglected brethren are. Secondary and remoter effects of industrial changes, which were formerly dissipated and lost in the delay and friction of communication, are now, by our prompt and delicate mechanism of communication, caught up and transmitted through society.
It is plain that our social science is not on the level of the tasks which are thrown upon it by the vast and sudden changes in the whole mechanism by which man makes the resources of the globe available to satisfy his needs, and by the new ideas which are born of the new aspects which human life bears to our eyes in consequence of the development of science and the arts. Our traditions about the science and art of living are plainly inadequate. They break to pieces in our hands when we try to apply them to the new cases. A man of good faith may come to the conviction sadly, but he must come to the conviction honestly, that the traditional doctrines and explanations of human life are worthless.
A progress which is not symmetrical is not true; that is to say, every branch of human interest must be developed proportionately to all the other branches, else the one which remains in arrears will measure the advance which may be won by the whole. If, then, we cannot
