This migratory habit has been especially common with the unskilled laborers who have been pouring into the United States in the last dozen years from every country in southeastern Europe. Many of them return to spend their earnings in their own country or to serve their country in war. But they return with an entirely new critical outlook, and a sense of the superiority of American organization to the primitive living around them. This continued passage to and fro has already raised the material standard of living in many regions of these backward countries. For these regions are thus endowed with exactly what they need, the capital for the exploitation of their natural resources, and the spirit of enterprise. America is thus educating these laggard peoples from the very bottom of society up, awaking vast masses to a new-born hope for the future. In the migratory Greek, therefore, we have not the parasitic alien, the doubtful American asset, but a symbol of that cosmopolitan interchange which is coming, in spite of all war and national exclusiveness. Only America, by reason of the unique liberty of opportunity and traditional isolation for which she seems to stand, can lead in this cosmopolitan enterprise. Only the American--and in this category I include the migratory alien who has lived with us and caught the pioneer spirit and a sense of new social vistas--has the chance to become that citizen of the world. America is coming to be, not a nationality but a trans-nationality, a weaving back and forth, with the other lands, of many threads of all sizes and colors. Any movement which attempts to thwart this weaving, or to dye the fabric any one color, or disentangle the threads of the strands, is false to this cosmopolitan vision. I do not mean that we shall necessarily glut ourselves with the raw product of humanity. It would be folly to absorb the nations faster than we could weave them. We have no duty either to admit or reject. It is purely a question of expediency. What concerns us is the fact that the strands are here. We must have a policy and an ideal for an actual situation. Our question is, What shall we do with our America? How are we likely to get the more creative America--by confining our imaginations to the ideal of the melting-pot, or broadening them to some such cosmopolitan conception as I have been vaguely sketching?