into a theory, and of a theory into an assumption, has hardly yet gone out of fashion. People cannot easily get rid of the mental confusion of feeling that the foundations of history must surely be secure; that the first steps must be safe; that the biggest generalisation must be obvious. But though the contradiction may seem to them a paradox, this is the very contrary of the truth. It is the large thing that is secret and invisible; it is the small thing that is evident and enormous.
Every race on the face of the earth has been the subject of these speculations, and it is impossible even to suggest an outline of the subject. But if we take the European race alone, its history, or rather its prehistory, has undergone many retrospective revolutions in the short period of my own lifetime. It used to be called the Caucasian race; and I read in childhood an account of its collision with the Mongolian race; it was written by Bret Harte and opened with the query, “Or is the Caucasian played out?” Apparently the Caucasian was played out, for in a very short time he had been turned into the Indo-European man; sometimes, I regret to say, proudly presented as the Indo-Germanic man. It seems that the Hindu and the German have similar words for mother or father; there were other similarities between Sanskrit and various Western tongues; and with that all superficial differences between a Hindu and a German seemed suddenly to disappear. Generally this composite person was more conveniently described as the Aryan, and the really important point was that he had marched westward out of those high lands of India where fragments of his language could still be found. When I read this as a child, I had the fancy that after all the Aryan need not have marched westward and left his language behind him; he might also have marched eastward and taken his language with him. If I were to read it now, I should content myself with confessing my ignorance of the whole matter. But as a matter of fact I have great difficulty in reading it now, because it is not being written now. It looks as if the Aryan is also played out. Anyhow he has not merely changed his name but changed his address; his starting-place and his route of travel. One new theory