Toward the end of his classic treatise An Essay on Free Will, Peter van Inwagen offers a modal argument against the Principle of Sufficient Reason which he argues shows that the principle “collapses all modal distinctions.” In this paper, a critical flaw in this argument is shown to lie in van Inwagen’s beginning assumption that there is such a thing as the conjunction of all contingently true propositions. This is shown to follow from Cantor’s theorem and a property of conjunction (...) with respect to contingent propositions. Given the failure of this assumption, van Inwagen’s argument against the Principle of Sufficient Reason cannot succeed, at least not without the addition of some remarkable and previously unacknowledged qualifications. (shrink)

Kathrin Koslicki argues that ordinary material objects like tables and motorcycles have formal proper parts that structure the material proper parts. Karen Bennett rejects a key premise in Koslicki's argument according to which the material ingredient out of which a complex material object is made is a proper part of that object. Koslicki defends this premise with a principle motivated by its power to explain three important phenomena of material composition. But these phenomena can be equally well explained by a (...) weaker principle that does not support the questioned premise in Koslicki's argument, Bennett argues. I show that Bennett's weaker principle, together with an appropriate strengthening of a different premise in Koslicki's original argument, still yields a sound argument for the existence of formal parts. (shrink)

One of the greatest challenges facing materialist theories of the human mind is the problem of intentionality. As many non-materialists of various stripes have pointed out, it is very difficult to say, if the human mind is a purely material thing, how this material thing can be about or represent another thing wholly distinct from itself. However, for their part, these same non-materialists have relied heavily or exclusively on this intuition that one material thing cannot be about another. In this (...) paper, that hole in the intentionality objection to materialist theories of mind is filled by way of providing the germ of a new theory of the metaphysics of intentionality. On this view, intentionality just is partial identity. Partial identity is a concept introduced by David Armstrong and used by Donald Baxter to give a metaphysics of instantiation. The aboutness exhibited by our mental activity is simply a partial identity relation between the mind and the object of thought. This thesis, I contend, is a faithful interpretation of Brentano’s “intentional inexistence,” which the objects of thought have in the mind and which he held to be characteristic exclusively of mental phenomena. Some interesting and fortuitous consequences, including an elucidation of precisely why one material thing can never be about something distinct from itself, are then examined, and finally a defense against some objections is given. (shrink)

In their recent paper, Brandon Rickabaugh and Derek McAllister object to Paul Moser’s rejection of natural theology on the grounds that Moser is committed to a principle, Seek, which commits Moser to another principle, Access. Access in turn can be rationally motivated for at least some nonbelievers only by the arguments of natural theology. So Moser is in fact committed to the epistemic usefulness of natural theology. In this paper, we show that Seek by itself does not commit one to (...) Access, and that even if Moser is committed to Access, he is not thereby committed to the epistemic usefulness of natural theology for all nonbelievers. While we find this argument offered by Rickabaugh and McAllister lacking, we do not deny their conclusion that natural theology is epistemically useful to all nonbelievers. (shrink)