That illustrious Frenchman, H. A. Taine ("History of English Literature," p. 23), sees the unity of the Indo-European races manifest in their languages, literature, and philosophies, and argues that these pre-eminent traits are "the great marks of an original model," and that when we meet with them "fifteen, twenty, thirty centuries before our era, in an Aryan, an Egyptian, a Chinese, they represent the work of a great many ages, perhaps of several myriads of centuries.... Such is the first and richest source of these master faculties from which historical events take their rise; and one sees that if it be powerful it is because this is no simple spring, but a kind of lake, a deep reservoir, wherein other springs have, for a multitude of centuries, discharged their several streams." In other words, the capacity of the Egyptian, Aryan, Chaldean, Chinese, Saxon, and Celt to maintain civilization is simply the result of civilized training during "myriads of centuries" in some original home of the race. I cannot believe that the great inventions were duplicated spontaneously, as some would have us believe, in different countries; there is no truth in the theory that men pressed by necessity will always hit upon the same invention to relieve their wants. If this were so, all savages would have invented the boomerang; all savages would possess pottery, bows and arrows, slings, tents, and canoes; in short, all races would have risen to civilization, for certainly the comforts of life are as agreeable to one people as another.