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 in teaching a new science which few men in the world were able to teach. My own work in this science was based chiefly upon the work of a German and an Italian. My pupils came from all over the civilized world: France, Germany, Austria, Russia, Greece, Japan, China, India, and America. None of us was conscious of any sense of national divisions. We felt ourselves an outpost of civilization, building a new road into the virgin forest of the unknown. All coöperated in the common task, and in the interest of such a work the political enmities of nations seemed trivial, temporary, and futile.

But it is not only in the somewhat rarefied atmosphere of abstruse science that international coöperation is vital to the progress of civilization. All our economic problems, all the questions of securing the rights of labor, all the hopes of