Abstract

In this paper, I discuss Moore’s assessment of Lewis’s metaphysical theorizing. While I am sympathetic to Moore’s complaint that much contemporary metaphysics lacks the scope and reach of older metaphysical theories, I take issue with Moore’s diagnosis: neither lack of self-consciousness, nor Quinean naturalism, nor the post-Quinean restitution of necessity is to blame. Rather, the lack of impact of Lewis’s system should be attributed to the very high weight he attaches to conservatism: the preservation of commonsense and ordinary thought and talk. Yet one can agree with Quine that there should be no first philosophy without, as Lewis does, putting philosophy last. Finally, I argue against Moore that, for the Quinean naturalist, there is no conflict between the metaphysician’s armchair methodology and the view that the truths so discovered are on a par with science.