Like many other Oxford Realists, Penbygull lists three main kinds of universals: (i) the metaphysical causes of everything, like God and the angelic intelligences; (ii) the general concepts abstracted by our mind, or mental universals; and (iii) the common natures existing in the singulars, or real universals (De universalibus, p. 178). Such common natures are type-forms naturally apt to be present-in and predicated-of a set of individuals, which therefore instantiate them. Real universals are t