No doubt we should apologize for writing, even so, so long a preface to so succinct a book. The one excuse we can think of is that, having read it, one need not read the book. That book, as we have said, may strike the superficial as jocular, but in actual fact it is a very serious and even profound composition, not addressed to the casual reader, but to the scholar. Its preparation involved a great diligence, and its study is not to be undertaken lightly. What the psychologist will find to admire in it, however, is not its learning and painstaking, its laborious erudition, but its compression. It establishes, we believe, a new and clearer method for a science long run to turgidity and flatulence. Perhaps it may be even said to set up an entirely new science, to wit, that of descriptive sociological psychology. We believe that this field will attract many men of inquiring mind hereafter and yield a valuable crop of important facts. The experimental method, intrinsically so sound and useful, has been much abused by orthodox psychologists; it inevitably leads them into a trackless maze of meaningless tables and diagrams; they keep their eyes so resolutely upon the intellectual process that they pay no heed to the primary intellectual materials. Nevertheless, it must be obvious that the conclusions that a man comes to, the emotions that he harbours and the crazes that sway him are of much less significance than the fundamental assumptions upon which they are all based. There has been, indeed, some discussion of those fundamental assumptions of late. We have heard, for example, many acute discourses upon the effects produced upon the whole thinking of the German people, peasants and professors alike, by the underlying German assumption that the late Kaiser was anointed of God and hence above all ordinary human responsibility. We have heard talk, too, of the curious Irish axiom that there is a mysterious something in the nature of things, giving the Irish people an indefeasible right to govern Ireland as they please, regardless of the safety of their next-door neighbours. And we have heard many outlandish principles of the same sort from political theorists, _e.g._, regarding the inalienable right of democracy to prevail over all other forms of government and the inalienable right of all national groups, however small, to self-determination. Well, here is an attempt to assemble in convenient form, without comment or interpretation, some of the fundamental beliefs of the largest body of human beings now under one flag in Christendom. It is but a beginning. The field is barely platted. It must be explored to the last furlong and all its fantastic and fascinating treasures unearthed and examined before ever there can be any accurate understanding of the mind of the American people. GEORGE JEAN NATHAN H.L. MENCKEN _New York, 1920._ THE AMERICAN CREDO Sec.1