The catastrophe of the Great War did more or less completely awaken a certain limited number of intelligent people to the need of some general control replacing this ancient traditional driftage of events. But they shrank from the great implications of such a world control. The only practicable way to achieve a general control in the face of existing governments, institutions and prejudices, interested obstruction and the common disregard, is by extending this awakening to great masses of people. This means an unprecedented educational effort, an appeal to men's intelligence and men's imagination such as the world has never seen before. Is it possible to rationalize the at present chaotic will of mankind? That possibility, if it is a possibility, is the most important thing in contemporary human affairs. We are asking here for an immense thing, for a change of ideas, a vast enlargement of ideas, and for something very like a change of heart in hundreds of millions of human beings. But then we are dealing with the fate of the entire species. We are discussing the prevention of wars, disorders, shortages, famines and miseries for centuries ahead. The initial capital we have to go upon is as yet no more than the aroused understanding and conscience of a few thousands, at most of a few score thousands of people. Can so little a leaven leaven so great a lump? Is a response to this appeal latent in the masses of mankind? Is there anything in history to justify hope for so gigantic a mental turnover in our race?