This work presents an analysis and critique of the major varieties of contemporary philosophical naturalism. It advocates the thesis that contemporary naturalism should be abandoned in light of the serious difficulties raised against it. The contributors draw on a wide range of topics including: epistemology; philosophy of science; value theory to basic analytic ontology; philosophy of mind and agency; and natural theology. For some time now, philosophical naturalism has played a dominant intellectual and sociological role in academia. Throughout a large sector of professional philosophy, philosophical naturalism determines the way philosophy is to be done, what counts as good methodology, and what it takes to be a worthwhile topic for study.