Here, again, as in the case of God, the first thing that needs to be overcome is ignorance. Look back no further than our late war. I think every careful student of that tremendous conflict is ready to say to-day that, if the North and South had been acquainted with each other, known each other as they know each other now, the war would have been impossible. We need to know other men. As you go back, you find curious traditions illustrating this ignorance of different nations and different peoples of each other. Plato, for example, taught it as a virtue that the Athenians should hate all other peoples except the Greeks and all other Greek cities except Athens; and they spoke of the outside nations that did not speak Greek as barbarians, people who could not talk, people who, when they essayed to speak, said, "Ba, ba," misusing words and expressions. They had traditions of men who carried their heads under their arms, who had only one eye, which was in the middle of their forehead, all sorts of monstrosities in human shape, antagonistic to the rest of mankind. Even in modern times those ignorances, misconceptions, and prejudices are far from being outgrown. Lord Nelson counted it as a virtue in an Englishman that he should hate a Frenchman as he did the devil. How many people are there to- day who look with an unprejudiced eye upon a foreigner? The things, then, that keep nations apart are ignorance. Then there is the lack of sympathy. You will find people walking side by side here in our streets, people in the same family, who find it impossible to understand each other. They cannot put themselves in the place of another; they cannot comprehend something which is a little different from what they are accustomed to hear; not only cannot they understand it, they cannot lovingly or patiently look at it. Think of the things that have kept people apart in physical and mental and spiritual realms, the rivers, the mountain chains, the oceans; differences of religion, differences of language, differences of civilization; different ethical ideas, until people of the world have sat looking at each other with faces of fear and antagonism instead of with the dawning in their eyes of love and brotherhood. Now what the world needs is something to atone, to bridge over these differences, to bring men into sympathetic and loving acquaintance with each other. I wish to note two or three things that have wrought very largely and effectively in this direction. Does it ever occur to you that commerce is something besides a means for the accumulation of wealth? Commerce has played one of the largest parts in the history of this world in atoning the differences, the antagonisms, between nation and nation and man and man. It has taught the world that there is a community of interests, and that, instead of fighting each other, they are mutually blessed and helped by coworking, co-operating, exchanging with each other.