All we writers find ourselves engaged perforce in some part or other of a world-wide propaganda of this the most creative and hopeful of political ideas that has ever dawned upon the consciousness of mankind. With no concerted plan we feel called upon to serve it. And in no connection would one so like to think oneself un-original as in this connection. It would be a dismaying thing to realize that one were writing anything here which was not the possible thought of great multitudes of other people, and capable of becoming the common thought of mankind. One writes in such a book as this not to express oneself but to swell a chorus. The idea of the League of Nations is so great a one that it may well override the pretensions and command the allegiance of kings; much more does it claim the self-subjugation of the journalistic writer. Our innumerable books upon this great edifice of a World Peace do not constitute a scramble for attention, but an attempt to express in every variety of phrase and aspect this one system of ideas which now possesses us all. In the same way the elementary facts and ideas of the science of chemistry might conceivably be put completely and fully into one text-book, but, as a matter of fact, it is far more convenient to tell that same story over in a thousand different forms, in a text-book for boys here, for a different sort or class of boy there, for adult students, for reference, for people expert in mathematics, for people unused to the scientific method, and so on. For the last year the writer has been doing what he can--and a number of other writers have been doing what they can--to bring about a united declaration of all the Atlantic Allies in favour of a League of Nations, and to define the necessary nature of that League. He has, in the course of this work, written a series of articles upon the League and upon _the necessary sacrifices of preconceptions_ that the idea involves in the London press. He has also been trying to clear his own mind upon the real meaning of that ambiguous word "democracy," for which the League is to make the world "safe." The bulk of this book is made up of these discussions. For a very considerable number of readers, it may be well to admit here, it can have no possible interest; they will have come at these questions themselves from different angles and they will have long since got to their own conclusions. But there may be others whose angle of approach may be similar to the writer's, who may have asked some or most of the questions he has had to ask, and who may be actively interested in the answers and the working out of the answers he has made to these questions. For them this book is printed. H. G. WELLS. _May_, 1918.