But there is yet another feature peculiar to Humanity, and one of primary importance. That feature is, that the elements of which she is composed must always have an independent existence. In other organisms the parts have no existence when severed from the whole; but this, the greatest of all organisms, is made up of lives which can really be separated. There is, as we have seen, harmony of parts as well as independence, but the last of these conditions is as indispensable as the first. Humanity would cease to be superior to other beings were it possible for her elements to become inseparable. The two conditions are equally necessary: but the difficulty of reconciling them is so great as to account at once for the slowness with which this highest of all organisms has been developed. It must not, however, be supposed that the new Supreme Being is, like the old, merely a subjective result of our powers of abstraction. Its existence is revealed to us, on the contrary, by close investigation of objective fact. Man indeed, as an individual, cannot properly be said to exist, except in the exaggerated abstractions of modern metaphysicians. Existence in the true sense can only be predicated of Humanity; although the complexity of her nature prevented men from forming a systematic conception of it, until the necessary stages of scientific initiation had been passed. Bearing this conclusion in mind, we shall be able now to distinguish in Humanity two distinct orders of functions: those by which she acts upon the world, and those which bind together her component parts. Humanity cannot herself act otherwise than by her separable members; but the efficiency of these members depends upon their working in co-operation, whether instinctively or with design. We find, then, external functions relating principally to the material existence of this organism; and internal functions by which its movable elements are combined. This distinction is but an application of the great theory, due to Bichat’s genius, of the distinction between the life of nutrition and the life of relation which we find in the individual organism. Philosophically it is the source from which we derive the great social principle of separation of spiritual from temporal power. The temporal power governs: it originates in the personal instincts, and it stimulates activity. On it depends social Order. The spiritual power can only moderate: it is the exponent of our social instincts, and it promotes co-operation, which is the guarantee of Progress. Of these functions of Humanity the first corresponds to the function of nutrition, the second to that of innervation in the individual organism. [Dynamical aspects]