Abstract
If the property being a methane molecule is a universal, then it is a structural universal: objects instantiate being a methane molecule just in case they have the right sorts of proper parts arranged in the right sort of way. Lewis argued that there can be no satisfactory account of structural universals; in this paper I provide a satisfactory account.
Notes
1My work on this paper was supported by a Philip Leverhulme Prize, which I gratefully acknowledge. I am also grateful for comments from anonymous AJP referees, and from audiences at the Universities of Cambridge, Glasgow, Leeds and St Andrews.