RT Article T1 A New Argument for the Incompatibility of Hylomorphism and Metaphysical Naturalism JF Proceedings of the American Catholic Philosophical Association VO 89 SP 119 OP 130 A1 Dumsday, Travis LA English YR 2015 UL https://ixtheo.de/Record/1578190746 AB Within the substance ontology literature in recent analytic metaphysics, four principal theories are in competition: substratum theory, bundle theory, primitive substance theory, and hylomorphism. This paper is part of a larger project attempting to show that each of these four theories is incompatible with metaphysical naturalism (which of course creates a problem for that view, if indeed these four theories are the only potentially workable options). To that end, I explicate and defend the following argument: Premise 1: Prime matter either can exist on its own (unactualized by substantial form) or it cannot. Premise 2: If prime matter can exist on its own (unactualized by substantial form) then metaphysical naturalism is false. Premise 3: If prime matter cannot exist on its own (unactualized by substantial form) then metaphysical naturalism is false. Conclusion; Therefore, either way, metaphysical naturalism is false. K1 Hylomorphism K1 Metaphysics K1 Naturalism K1 Ontology K1 Realism DO 10.5840/acpaproc20171357