What is needed to render DDS coherent is a particular version of constituent ontology according to which a thing’s nature is a unitary concrete item and a constituent of the thing. In the case of material beings, the nature will be together with some individuating constituent such as signate or designated matter (materia signata). Material beings are individuated and diversified by their signate matter. Thus Socrates and Plato, though the same in nature, differ numerically in virtue of their different portions of materia signata. Matter makes them individuals, and matter makes them numerically...