Abstract

The metaphysical realist asserts, while the metaphysical antirealist denies, that there are individuals that exist independently of the existence and workings of any mind or minds. I begin by distinguishing the thesis of metaphysical realism from other theses that are also called ' realism '. Of particular interest in this discussion is the relation between metaphysical realism and views such as moral realism and scientific realism. ; Metaphysical realism is commonly thought to be the default position in the debate since it is prima facie supported by our commonsense intuitions concerning the nature of reality. I develop several arguments to show that, when we examine our intuitions in detail, metaphysical realism is not the entirely commonsensical view that it at first appears. I argue that if metaphysical realism is true, it is difficult to see how semantic and epistemic access to the mind-independent world is possible and that, even if we do have such access, it will be difficult to rule out very bizarre ontologies. While none of these arguments constitute a decisive objection to metaphysical realism, they do suggest that the metaphysical realist should say something in defense of his view. ;I then examine Peter van Inwagen's attempted defense of metaphysical realism. This defense takes the form of a series of arguments designed to show that metaphysical antirealism is incoherent because incompatible with the existence of objective truth. I argue that his criticisms do not constitute an adequate defense of metaphysical realism because certain forms of antirealism, if otherwise philosophically viable, plausibly escape. ;This leads to a discussion of the extent to which an antirealist metaphysic can be considered a viable philosophical view. In this context, I examine the views of Hilary Putnam and Paul Grice. While the versions of metaphysical antirealism presented face serious difficulties of their own, I argue that it is a matter of philosophical judgment which view, metaphysical realism or metaphysical antirealism, has the more severe problems