The desire for a symbol of this kind, which shall gather together all the tribes and nations of men and all conflicting ideals of humanity, is a desire so deep and universal as to be perhaps the supreme desire of the human race. No symbol arbitrarily invented by any one man, even though he were the greatest genius that ever lived, could supply this want or satisfy this desire. And it could not do so because it would lack the organic weathering and bleaching, so to speak, of the long panorama of time. An individual genius might hit upon a better symbolic image, an image more comprehensive, more inclusive, more appealing to the entire nature of the complex vision; but without having been subjected to the sun and rain of actual human experience, without having endured the passion of the passing of the generations, such an image would remain, for all its appropriateness, remote, intellectual and barren of magical suggestiveness. I do not mean to indicate that there is necessarily any determined or fatalistic process of natural selection in these things by which one symbol rather than another gathers about it the hopes and fears of the generations. Chance no doubt plays a strange part in all this. But the concrete necessities of living human souls play a greater part than chance; and without believing in any steady evolutionary process or even in any law of natural selection among the evocations of human desire, it must still remain that the symbol which survives will be the symbol adapted to the deepest instincts of complicated souls and at the same time palpable and tangible to the touch of the crudest and most simple. It cannot be denied that there are serious difficulties in the way of the acceptance of any historic symbol, the anonymous evocation of the generations of men. Just because it has a definite place in history such a symbol will necessarily have gathered to itself much that is false and much that is accidental and unessential. It will have entered into bitter controversies. It will have been hardened and narrowed by the ferocious logic of rationalistic definition. It will have been made the rallying cry of savage intolerances and the mask for strange perversions. Evil will naturally have attached itself to it and malice will have left its sinister stain upon it. Because chance and accident and even evil have had much to do with its survival, it may easily happen that some primary attribute of the complex vision, such for instance as the aesthetic sense with its innate awareness of the humorous and the grotesque, will have been forgotten altogether in the stuff out of which it is made.