Yet we should deceive ourselves if we imagined that the belief in witchcraft is even now dead in the mass of the people; on the contrary there is ample evidence to shew that it only hibernates under the chilling influence of rationalism, and that it would start into active life if that influence were ever seriously relaxed. The truth seems to be that to this day the peasant remains a pagan and savage at heart; his civilization is merely a thin veneer which the hard knocks of life soon abrade, exposing the solid core of paganism and savagery below. The danger created by a bottomless layer of ignorance and superstition under the crust of civilized society is lessened, not only by the natural torpidity and inertia of the bucolic mind, but also by the progressive decrease of the rural as compared with the urban population in modern states; for I believe it will be found that the artisans who congregate in towns are far less retentive of primitive modes of thought than their rustic brethren. In every age cities have been the centres and as it were the lighthouses from which ideas radiate into the surrounding darkness, kindled by the friction of mind with mind in the crowded haunts of men; and it is natural that at these beacons of intellectual light all should partake in some measure of the general illumination. No doubt the mental ferment and unrest of great cities have their dark as well as their bright side; but among the evils to be apprehended from them the chances of a pagan revival need hardly be reckoned. Another point on which I have changed my mind is the nature of the great Aryan god whom the Romans called Jupiter and the Greeks Zeus. Whereas I formerly argued that he was primarily a personification of the sacred oak and only in the second place a personification of the thundering sky, I now invert the order of his divine functions and believe that he was a sky-god before he came to be associated with the oak. In fact, I revert to the traditional view of Jupiter, recant my heresy, and am gathered like a lost sheep into the fold of mythological orthodoxy. The good shepherd who has brought me back is my friend Mr. W. Warde Fowler. He has removed the stone over which I stumbled in the wilderness by explaining in a simple and natural way how a god of the thundering sky might easily come to be afterwards associated with the oak. The explanation turns on the great frequency with which, as statistics prove, the oak is struck by lightning beyond any other tree of the wood in Europe. To our rude forefathers, who dwelt in the gloomy depths of the primaeval forest, it might well seem that the riven and blackened oaks must indeed be favourites of the sky-god, who so often descended on them from the murky cloud in a flash of lightning and a crash of thunder.