This paper examines an often-ignored aspect of the evaluation of metaphysical analyses, namely, their ontological commitments. Such evaluations are part of metaphysical methodology, and reflection on this methodology is itself part of metametaphysics. I will develop a theory for assessing what these commitments are, and then I will apply it to an important historical and an important contemporary metaphysical analysis of the concept of an individual substance (i.e., an object, or thing). I claim that in evaluating metaphysical analyses, we should (...) not only rule out counterexamples, but also compare them with respect to their ontological commitments, and we should hold that if they are comparable in other respects, then an analysis with fewer such commitments is preferable to one with more (There is, of course, a connection between counterexamples and ontological commitments. If the existence or possible existence of something one is committed to the existence or possible existence of is incompatible with an analysis, then one should reject that analysis as inadequate to the data. On the other hand, if one is uncertain about the existence or possible existence of something that is incompatible with an analysis, then while this does not refute the analysis for one, it raises doubts about it. The fewer such doubts are raised by an analysis, the better it is.). (shrink)
Substance: Its Nature and Existence investigates the very nature and existence of individual substances, including both living things and inanimate objects. It provides an accessible introduction to the history and contemporary debates of this important and often complex issue. Starting with a critical survey of the main historical attempts by Aristotle, Descartes, Spinoza, Locke and Hume to provide an analysis of substance, the authors present the view that a substance must satisfy an independence condition which could not be satisfied by (...) an insubstantial entity. Throughout the book, the authors also consider problems for the notion of substance raised by the unity of the parts of organisms and explore the problem of how we can actually know what kinds of physical substance there are. (shrink)
This book revives a neglected but important topic in philosophy: the nature of substance. The belief that there are individual substances, for example, material objects and persons, is at the core of our common-sense view of the world yet many metaphysicians deny the very coherence of the concept of substance. The authors develop a novel account of what an individual substance is in terms of independence from other beings. In the process many other important ontological categories are explored: property, event, (...) space, time. The authors show why alternative theories of substance fail, and go on to defend the intelligibility (though not the existence) of interacting spiritual and material substances. (shrink)
