  Nonetheless, in Quodlibet VII, q. 5 he comments that if different individuals within the same species share in the same specific nature, that nature cannot itself serve as the principle that renders them numerically distinct from one another. Something else seems to be needed, perhaps quantity. But to make quantity the principle of individuation will not resolve the problem, for this would be to reduce the principle that distinguishes one substance from others within the same species to the level of an accident. Godfrey notes that in the case of created immaterial beings (angels), their substantial form is also that by which they are individuals. He proposes, therefore, that in corporeal substances it is also the substantial form that serves as their principle of individuation. Nonetheless, quantity has its role to play as well since it is required in order to divide matter into distinct parts and thereby enable it to receive and individuate substantial forms of the same kind. In other words, quantity disposes matter so as to enable it to function as the material principle of individuation. The formal cause or principle of a thing’s individuation is its substantial form. Quantity is not the formal principle of individuation, but by disposing matter so that it can receive different substantial forms, it may be described as a quasi-material disposing cause of individuation (Wippel, 1981, 349–64).