What is an Ontological Category?
Abstract
In this article, I examine the concept of a natural class and propose a definition of "ontological category" in terms of that concept. Let's say a class is "large" if its membership comprises a significant proportion of the things which are there. Let's say a class is "high" if it is not a proper subclass of any natural class. Then a natural class is a primary ontological category if and only if (a) there are large natural classes, and (b) it is a high class. (Secondary, tertiary, etc., ontological categories are defined by an extension of this definition). I defend the definition, consider various ways in which it might be modified, and apply it to the problem of constructing a taxonomy of ontologies.
References
van Inwagen, Peter (2009). “Being, Existence, and Ontological Commitment.” In Metametaphysics: New Essays on the Foundations of Ontology, edited by David J. Chalmers, David Manley and RyanWasserman. New York: Oxford University Press, pp. 472–506
van Inwagen, Peter (2010). Ontology, Identity, and Modality: Essays in Metaphysics. New York: Cambridge University Press.
van Inwagen, Peter (2012). “Relational vs. Constituent Ontologies.” In Metaphysics, edited by John Hawthorne and Jason Turner (Philosophical Perspectives 26). Hoboken, NJ: Wiley-Blackwell, pp. 389–405
van Inwagen, Peter (2014). Existence. Essays in Ontology. New York: Cambridge University Press.
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