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.

The Great Illusion (1910)