Naturalism is the dominant philosophical stance in North American philosophy today. Many philosophers explicitly identify themselves as naturalists, whose philosophical work is closely aligned with the natural sciences. Yet the best evidence for the dominance of naturalism comes from those philosophers who profess to be its opponents. These critics often make very significant concessions to naturalism. They hasten to accept a broadly scientific understanding of the world. They also often disavow any philosophical constraints upon scientific inquiry. Many even express these sentiments by accepting ‘naturalism ’ as a label for their own views: they oppose “radical ” versions of naturalism, but do so by defending a more tolerant, inclusive ver...