"It is a truism, of course, but it is none the less a fact which we must never forget, that this continent and this American community have been blessed with an unparalleled capacity for assimilating peoples of varying races and nations. The continuing migration which in three centuries has established here this nation of more than a hundred million, has been the greatest that history records as taking place in any such brief period. Viewing it historically, we find that the migration to America was little more than a westward projection of the series of great movements of peoples... It was the fate of Europe to be always a battleground. Differences in race, in religion, in political genius and social ideals, seemed always, in the atmosphere of our mother continent, to be invitations to contest by battle. From the dawn of history, and we can only conjecture how much longer, the conflicts of races and civilizations, of traditions and usages, have gone on. It is one of the anomalies of the human story that these peoples, who could not be assimilated and unified under the skies of Europe, should on coming to America discover an amazing genius for cooperation, for fusion, and for harmonious effort. Yet they were the same people when they came here that they had been on the other side of the Atlantic. Quite apparently, they found something in our institutions, something in the American system of Government and society which they themselves helped to construct, that furnished to all of them a political and cultural common denominator."