The directly contrary view, then, is taken that though, truly enough, there has been and is much “murdering and being murdered,” yet organisms “have gradually evolved” towards fitness for their surroundings, or the milieu environnant of Lamarck, which we translate environment; and that since fitness or adaptation obviously makes for happiness, and since the moral being man has himself been thus evolved, the process of natural selection, “murdering and being murdered” notwithstanding, is essentially beneficent.
The controversy is embittered and complicated by the fact that ultimate questions of religion and philosophy are involved. Is the Universe moral, as Emerson asserted it was, or is it immoral? A recent opponent of the orthodox creed of a benevolent Deity teaches that “The Lesson of Evolution” is to disprove the idea of benevolence behind or in Nature: “The story of life has been a story of pain and cruelty of the most ghastly description.” The age-long fact of “murdering and being murdered” is the weapon with which he attacks the theist: who, per contra, points to the beneficent result, the exquisite adaptation of all species to the circumstances of their life, and the evolution of love itself.
We may remind ourselves of those great lines of Mr. George Meredith,
“... sure reward
We have whom knowledge crowns;
Who see in mould the rose unfold,
The soul through blood and tears.”
The one camp points to the “blood and tears” and asks for a verdict accordingly. The other points to “the soul” as their product, and asks for a verdict accordingly. But surely we need only to have the case fairly stated, in order to realise that the “blood and tears” are true but only half the truth, “the soul” true but only half the truth. Natural Selection is a colossal paradox—the doing evil that good may come. The evil is undoubtedly done, and the good undoubtedly comes. Is not this the only verdict that is in consonance with all the facts? Is it not less than philosophic to look at the process alone, or to look at the result alone? Is any real end to be served by the incessant cry that we should keep our eyes fixed on the “blood and tears” alone, or on “the soul” alone? Is not the poet right when he says that the sure reward of knowledge is not to see either half of the truth as if it were the whole, but to see unfold “the soul through blood and tears?”
Any attempt to cast up accounts between the evil of the process and the good of the result—especially any attempt based on the assumption that the process has yet achieved its final result—would be not only premature in the eyes of those who can look forwards, but would be irrelevant to our present enquiry. I certainly am with those who repudiate as misleading Mill's description of Nature as a “vast slaughter-house,” and will declare that, apart from self-conscious and supremely sensitive man, it is easy to exaggerate the misery and to minimise the joy of the sub-human world. But our business here is with the process and its results in man himself, in whom alone are possible the heights of ecstasy and the depths of agony: and the thesis—the sublime thesis, we may avouch—of the present discussion is that, whatever the balance between the evil of the process of Natural Selection and the good of its results in the natural state, yet when it is transmuted, as it may be, by the moral intelligence of man, according to the principles of race-culture or eugenics, the good of the result can be attained, more abundantly and incomparably more rapidly, than ever heretofore, whilst the evil of the process can be abolished altogether. True or false, is this not a sublime thesis?
Nature must be cruel to be kind.—If organic fitness or adaptation to the circumstances of life is to be secured, Nature must choose for future parents, out of every new generation, only those whose inborn characters make for this adaptation, and who, in virtue of the fact we call heredity, will tend to transmit this fitness to their offspring. Now it is often convenient to personify Nature, but we must not be misled. The process is really an automatic, not an intelligently directed one. In order that it shall be possible, certain conditions must obtain. The choice or selection depends not merely upon the provision of a variety from which to choose—this being afforded by what is called variation, which is the correlative of heredity, both being obvious facts in any well-filled nursery—but also upon the production of more young creatures than there is or will be room for. (If there be room for all, so that all survive, there can be no selection, and instead of survival of the fittest there will be indiscriminate survival.) The choice is effected amongst this superfluity by an internecine “struggle for existence”: hence the “murdering and being murdered,” hence the “blood and tears.” The motor force of the whole process may be symbolised as the “will to life,” ever seeking to realise itself in more abundance and with more success—with more and more approximation to perfect adaptation. The will to death is no ingredient of the will to life. Nature is, so to say, by no means desirous of the process of “murdering and being murdered”: very much on the contrary. It is life, more life, and fitter life, that is her desire: the “murdering and being murdered,” the “blood and tears” are no part of her aim. But they are inevitable, though lamentable, if her aim is to be realised. She must be cruel to be kind—a little cruel to be very kind.[6]
It is imaginable, though no more, that natural selection, in certain circumstances, might have worked otherwise: the penalty for less as against greater fitness might imaginably have been not death but merely sterility—the denial of future parenthood. This is the ideal of race-culture. Had this been possible, Nature could have effected her end, which is fitter and fuller life, without having incidentally to mete out premature death to such an overwhelming majority of all her creatures. But, actually, this was not possible: and, unless the end was to be sacrificed, Nature was compelled—to keep up the figure—summarily to kill right and left. Permitted to reach maturity, the unfit as well as the fit would multiply; and since, in general, the lower the form of life the greater its fertility, the species could not possibly advance, or even maintain itself at the level already gained.