 Collingwood’s first mature work, An Essay on Philosophical Method (1933), is a substantial treatise in metaphilosophy which seeks to delineate the subject matter and method of philosophical analysis. Here Collingwood says that the true work of philosophy is “the distinguishing of concepts …coexisting in their instances” (EPM 2005: 51). The moral philosopher, for example, distinguishes between different kinds of good: the pleasant, the expedient, and the right (EPM 2005: 41). When philosophers distinguish between the pleasant, the expedient, and the right as species of the good they are not sorting things into mutually exclusive classes. If this were their goal then the philosophical distinction between the pleasant, the expedient, and the right would imply that