Of course, naturalist commitments of both ontological and methodological kinds can be significant in areas other than philosophy.  The modern history of psychology, biology, social science and even physics itself can usefully be seen as hinging on changing attitudes to naturalist ontological principles and naturalist methodological precepts. This entry, however, will be concerned solely with naturalist doctrines that are specific to philosophy. So the first part of this entry, on ontological naturalism, will be concerned specifically with views about the general contents of reality that are motivated by philosophical argument and analysis. And the second part, on methodological naturalism, will focus specifically on methodological debates that bear on philosophical practice, and in particular on the relationship between philosophy and science.