It is counterintuitive but true that the people with their feet most firmly planted on the ground are metaphysicians. Well, Thomist metaphysicians anyway. Here is one of my favorite bloggers, Thomist, with the ultimate take down of the naturalistic nonsense about proving through any scientific means of inquiry what mind or morality "really is":
"A scale proves that man is nothing other than a certain weight."
In other words, the assumption behind the naturalist project of trying to explain mind (or anything else for that matter) that purports to find that mind is merely matter, or that morality has some purely physical explanation, is that the thing measured is somehow limited by the means of measurement.
In fact, is that not the chief presupposition of scientism? That the object of inquiry is limited by the instrument of inquiry?