The more our commercial system gains in complication, the more does the common prosperity of us all come to depend upon the due performance of all contracts. Commercial development is broadly illustrating one profound truth: that the real basis of social morality is self-interest. If the subject of rivalry between nations is business, the code which has come to dominate business must necessarily come to dominate the conduct of governments.

The root problem is very simply stated: if there were no sovereign independent states, if the states of the civilized world were organized in some sort of federalism as the states of the American Union, for instance, are organized, there would be no international war as we know it. ... The main obstacle is nationalism.

The fight for ideals can no longer take the form of fight between nations, because the lines of division on moral questions are within the nations themselves and intersect the political frontiers. There is no modern State which is completely Catholic or Protestant, or liberal or autocratic, or aristocratic or democratic, or socialist or individualist; the moral and spiritual struggles of the modern world go on between citizens of the same State in unconscious intellectual cooperation with corresponding groups in other states, not between the public powers of rival States.