For we must remember when we say that the essence of individuality is the relating of self to other difference, that difference is not something static, something given, that it also is involved in the world of becoming. This is what experience teaches me—that society needs my difference, not as an absolute, but just so much difference as will relate me. Differences develop within the social process and are united through the social process. Difference which is not capable of relation is eccentricity. Eccentricity, caprice, put me outside, bring anarchy; true spontaneity, originality, belong not to chaos but to system. But spontaneity must be coördinated; irrelevancy produces nothing, is insanity. It is not my uniqueness which makes me of value to the whole but my power of relating. The nut and the screw form a perfect combination not because they are different, but because they exactly fit into each other and together can perform a function which neither could perform alone, or which neither could perform half of alone or any part of alone. It is not that the significance of the nut and screw is increased by their coming together, they have no significance at all unless they do come together. The fact that they have to be different to enter into any fruitful relation with each other is a matter of derivative importance—derived from the work they do. Another illustration is that of the specialist. It is not a knowledge of his specialty which makes an expert of service to society, but his insight into the relation of his specialty to the whole. Thus it implies not less but more relation, because the entire value of that specialization is that it is part of something. Instead of isolating him and giving him a narrower life, it gives him at once a broader life because it binds him more irrevocably to the whole. But the whole works both ways: the specialist not only contributes to the whole, but all his relations to the whole are embodied in his own particular work. Thus difference is only a part of the life process. To exaggerate this part led to the excessive and arrogant individualism of the nineteenth century. It behooves us children of the twentieth century to search diligently after the law of unity that we may effectively marshal and range under its dominating sway all the varying diversities of life.