"One cannot foretell the surprises or disappointments the future has in store. Before this chapter of the World State can begin fairly in our histories, other chapters as yet unsuspected may still need to be written, as long and as full of conflict as our account of the growth and rivalries of the Great Powers. There may be tragic economic struggles, grim grapplings, of race with race and class with class. It may be that "private enterprise" will refuse to learn the lesson of service without some quite catastrophic revolution, and that a phase of confiscation and amateurish socialistic government lies before us. We do not know; we cannot tell. These are unnecessary disasters, but they may be unavoidable disasters. Human history becomes more and more a race between education and catastrophe. Against the unifying effort of Christendom and against the unifying influence of the mechanical revolution, catastrophe won — at least to the extent of achieving the Great War. We cannot tell yet how much of the winnings of catastrophe still remain to be gathered in. New falsities may arise and hold men in some unrighteous and fated scheme of order for a time, before they collapse amidst the misery and slaughter of generations. Yet, clumsily or smoothly, the world, it seems, progresses and will progress."