It need hardly be said that the social philosophy of the time did not remain unaffected by the political evolution and the industrial development. Slowly sinking into men’s minds all this while was the conception of a new social nexus, and a new end of social life. It was discovered (or rediscovered) that a society is something more than an aggregate of so many individual units--that it possesses existence distinguishable from those of any of its components. A perfect city became recognized as something more than any number of good citizens--something to be tried by other tests, and weighed in other balances than the individual man. The community must necessarily aim, consciously or not, at its continuance as a community; its life transcends that of any of its members; and the interests of the individual unit must often clash with those of the whole. Though the social organism has itself evolved from the union of individual men, the individual is now created by the social organism of which he forms a part: his life is born of the larger life; his attributes are moulded by the social pressure; his activities, inextricably interwoven with others, belong to the activity of the whole. Without the continuance and sound health of the social organism, no man can now live or thrive; and its persistence is accordingly his paramount end. His conscious motive for action may be, nay, always must be, individual to himself; but where such action proves inimical to the social welfare, it must sooner or later be checked by the whole, lest the whole perish through the error of its member. The conditions of social health are accordingly a matter for scientific investigation. There is, at any moment, one particular arrangement of social relations which involves the minimum of human misery then and there possible amid the “niggardliness of nature.” Fifty years ago it would have been assumed that absolute freedom in the sense of individual or “manly” independence, plus a criminal code, would spontaneously result in such an arrangement for each particular nation; and the effect was the philosophic apotheosis of _Laisser Faire_. To-day every student is aware that no such optimistic assumption is warranted by the facts of life.[43] We know now that in natural selection at the stage of development where the existence of civilized mankind is at stake, the units selected from are not individuals, but societies. Its action at earlier stages, though analogous, is quite dissimilar. Among the lower animals physical strength or agility is the favored quality; if some heaven-sent genius among the cuttlefish developed a delicate poetic faculty, this high excellence would not delay his succumbing to his hulking neighbor. When, higher up in the scale, mental cunning became the favored attribute, an extra brain convolution, leading primitive man to the invention of fire or tools, enabled a comparatively puny savage to become the conqueror and survivor of his fellows.