I conclude that, whatever sorts of things may have intrinsic natures, numbers do not - that it simply does not pay to be an essentialist about numbers. We antiessentialists would like to convince you that it also does not pay to be essentialist about tables, stars, electrons, human beings, academic disciplines, social institutions, or anything else. We suggest that you think of all such objects as resembling numbers in the following respect: there is nothing to be known about them except an initially large, and forever expandable, web of relations to other objects. Everything that can serve as the term of a relation can be dissolved into another set of relations, and so on for ever. There are, so to speak, relations all the way down, all the way up, and all the way out in every direction: you never reach something which is not just one more nexus of relations. The system of natural numbers is a good model of the universe because in that system it is obvious, and obviously harmless, that there are no terms of relations which are not simply clusters of further relations.