Few people will dispute that all the typical movements of our time are upon this road towards simplification. Each system seeks to be more fundamental than the other; each seeks, in the literal sense, to undermine the other. In art, for example, the old conception of man, classic as the Apollo Belvedere, has first been attacked by the realist, who asserts that man, as a fact of natural history, is a creature with colourless hair and a freckled face. Then comes the Impressionist, going yet deeper, who asserts that to his physical eye, which alone is certain, man is a creature with purple hair and a grey face. Then comes the Symbolist, and says that to his soul, which alone is certain, man is a creature with green hair and a blue face. And all the great writers of our time represent in one form or another this attempt to re-establish communication with the elemental, or, as it is sometimes more roughly and fallaciously expressed, to return to nature. Some think that the return to nature consists in drinking no wine; some think that it consists in drinking a great deal more than is good for them. Some think that the return to nature is achieved by beating swords into ploughshares; some think it is achieved by turning ploughshares into very ineffectual British War Office bayonets. It is natural, according to the Jingo, for a man to kill other people with gunpowder and himself with gin. It is natural, according to the humanitarian revolutionist, to kill other people with dynamite and himself with vegetarianism. It would be too obviously Philistine a sentiment, perhaps, to suggest that the claim of either of these persons to be obeying the voice of nature is interesting when we consider that they require huge volumes of paradoxical argument to persuade themselves or anyone else of the truth of their conclusions. But the giants of our time are undoubtedly alike in that they approach by very different roads this conception of the return to simplicity. Ibsen returns to nature by the angular exterior of fact, Maeterlinck by the eternal tendencies of fable. Whitman returns to nature by seeing how much he can accept, Tolstoy by seeing how much he can reject.
Now, this heroic desire to return to nature is, of course, in some respects, rather like the heroic desire of a kitten to return to its own tail. A tail is a simple and beautiful object, rhythmic in curve and soothing in texture; but it is certainly one of the minor but characteristic qualities of a tail that it should hang behind. It is impossible to deny that it would in some degree lose its character if attached to any other part of the anatomy. Now, nature is like a tail in the sense that it is vitally important if it is to discharge its real duty that it should be always behind. To imagine that we can see nature, especially our own nature, face to face is a folly; it is even a blasphemy. It is like the conduct of a cat in some mad fairy-tale, who should set out on his travels with the firm conviction that he would find his tail growing like a tree in the meadows at the end of the world. And the actual effect of the travels of the philosopher in search of nature when seen from the outside looks very like the gyrations of the tail-pursuing kitten, exhibiting much enthusiasm but little dignity, much cry and very little tail. The grandeur of nature is that she is omnipotent and unseen, that she is perhaps ruling us most when we think that she is heeding us least. 'Thou art a God that hidest Thyself,' said the Hebrew poet. It may be said with all reverence that it is behind a man's back that the spirit of nature hides.