Evolution. F. B. Jevons

representatives of primitive man, and there was an end to the idea that the primitive state was perfection. The comparative method, once applied to the study of mankind, was able to set side by side examples of savagery, barbarism, and civilisation, which illustrated every step in the process of the evolution of society, and showed that, though the forms of society may fluctuate as do the waves of the sea, society itself is steady in its advance and progressive in its evolution. This conclusion, which at first was a deduction drawn from the animal descent of man, has now the independent support of an enormous amount of evidence. The existence of a Stone Age, palæolithic and neolithic, of a Bronze Age and an Iron Age, and the succession of those ages in the order named, are established facts of science. That the culture of nomad peoples is lower than that of pastoral tribes; that pastoral tribes advance in culture when they become agricultural; that agriculture, implying settled habits and fixed homes, leads to the foundation of cities and the formation of civic life; that the city-states of the ancient world give way to the nation-states of modern times: are all accepted facts, bridging the apparent chasm between civilisation and savagery, and demonstrating the action of the law of continuity in the evolution of society.

      But, it will be observed, all these facts and arguments taken together only prove what has been—not what will be. They show that from a level little higher than the brute man has attained to what he is; but is this enough to guarantee his continuous rise? In other words, have we reached the real source of that universal hope which, as we have said, is characteristic of this stage of man's evolution? The bark of man's destiny hitherto has been wafted by a favouring and a steady gale, and it is natural enough for the unreflecting to take it for granted that the wind will always set from the same happy quarter. But the question will obtrude itself whether we are justified in the presumption.

      If man shaped his own course, we might at least say that there was no reason why he should not continue to steer in the same direction as hitherto. But the most remarkable lesson that sociology has to teach us is that the course which he has followed so continuously has not been of his own steering. As we have already seen, man until this present generation has uniformly kept his eyes fixed on the quarter from which, not to which, he has imagined himself to be travelling, and, like a reluctant emigrant, has lamented the increasing distance between him and the happy shore from which he sailed. Or, to change the metaphor, society is an organism. Like all organisms, it starts as a relatively structureless mass; then, in accordance with the principle of the division of labour, different functions come to be performed by different parts; thus special organs are developed for the performance of special functions; division of labour further implies co-operation of the various organs and the development of the necessary means of communication and connection. All this is necessary for that evolution of society which we call progress; and of all these changes in the structure of society but few were ever intentionally planned by man. Mr. Herbert Spencer has familiarised this generation with the idea that the foreseen consequences of any intended change are insignificant as compared with the consequences unforeseen and unintended. Hence the general rule that the structural developments on which the evolution of society depends are but rarely the result of the coercive and conscious changes effected by government: in practically all cases they are the unintended consequences of the spontaneous actions of individuals aiming at something else and unconsciously promoting the evolution of society. So, too, the animal organism is made up of living units, each of which unconsciously performs the part necessary to be played by it, if the organism is to live; and each unit, unconsciously again, even modifies the part it plays, in order to promote the changes which constitute the evolution and the progress of the organism.

      We must therefore dismiss the idea that the progress of mankind and the evolution of society have been planned by man or are due to his design; and we must recognise the presence in human affairs of some unseen, impelling power which is continually guiding them to good issues and shaping them to ends not even rough-hewn by men. This power, it is evident, must be one not limited in its action to the social organism, but manifesting itself in animal organisms also, since there also it produces similar results. That power, we need hardly say, is to be sought in "the struggle for existence": wherever organisms are in excess of the means for supporting them, competition for food, for life, must ensue; and in this case the battle is to the strong, the race to the fleet. But of course strength is a relative term: what in some circumstances is a source of strength, in others may be a cause of weakness; and, generally, the very qualities which in some cases are of the highest value may in others be useless to their possessor. It is therefore the creature which possesses the particular kind of superiority required by the circumstances in which it finds itself, which is the creature that is likely to fare best, and is most likely to survive in the struggle for existence. But, further, the circumstances tend to produce the very superiority which they require: they ruthlessly reject and condemn to destruction every organism which fails to satisfy their requirements, thus leaving the field in possession of those organisms which have the required superiority. The next generation, therefore, is bred not from chance parents, but from parents which have been selected, by natural causes and the force of circumstances, as carefully as by the breeder who wishes to produce a prize animal. Every successive generation thus must be superior to that which preceded it. Advance is the very breath of every organism's being, the condition without which existence is impossible. To the talents which it has, every being must add other talents, or be cast out into the darkness of non-existence; whereas to the good and faithful servant who exercises all the powers entrusted to him even wider rule is given. Neither this world nor the next is for the idle or for the stupid. The intelligence must be alert to detect the slightest element of possible superiority, and the will resolute to work it to the utmost of its worth. Man must be wise in his generation; and the wise man makes friends even with the mammon of unrighteousness, and that quickly.

      If, then, it is by the perpetual and strenuous exercise of all its powers that an organism achieves the degree of superiority which is its contribution to the universal work of progress, it follows that "the performance of every function is, in a sense, a moral obligation," and that "the moral man is one whose functions are all discharged in degrees duly adjusted to the conditions of existence." Here, as elsewhere, the individual, to exist, must comply with the conditions of existence; and progress consists in more perfect compliance with the conditions. There is, however, a difference between the highly evolved organism, man, and the less complex organisms; between animal and human evolution; between biological and moral progress. In the case of the lower and simpler organisms, the creature is prompted simply and safely by its emotions to the performance of those functions on which its existence and the evolution of its species depend. But the evolution of man has been so rapid in its later stages, the social environment which he has himself created is so different from the circumstances in which he originally found himself, that his adjustment to his environment has become, so to speak, much looser, and consequently it is now no longer the case that actions in themselves pleasant are also necessarily beneficial in their consequences to the individual and to society. Moral progress, therefore, will manifest itself in the readjustment of man to his altered conditions. The consequence of that adjustment, when complete, will be that actions which are right—that is, are beneficial to the individual and to society—will always be pleasurable, not only in their consequences, but also immediately and in themselves. To this ideal, when all men will delight always in the thing that is right, and when all have attained to a height of morality now reached only by the few, man is being slowly but surely urged by the force which is the motive power of all evolution, the struggle for existence, regulated by the law which directs all progress, that of the survival of the fittest.

      Here, then, we have the reason of the hope that is characteristic of our generation; here the foundation of the calm confidence with which we count on the continuance of progress as a thing assured us. It is not merely that progress has been made in the past, that the gale hitherto has steadily blown us on a favourable course. We have learnt that it must of necessity always blow from the same quarter. Man's course is not dependent on man's fitful will: the wind and waves obey not him, but the Power which directs all evolution, and "our strength in ages past" is shown by science to be "our hope in years to come."

II.

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