It is often remarked that Iris Murdoch’s thought deeply influenced the landscape of twentieth-century moral philosophy. It is certainly true that she inspired a generation of Anglo-American philosophers who sought to critique the moral philosophy of their day. However, these philosophers drew almost exclusively from her early philosophical thought, most notably The Sovereignty of Good. When it came to Murdoch’s second book, Metaphysics as a Guide to Morals (MGM), moral philosophers and scholars alike found it hard to place within contemporary (...) moral philosophy.Our aim in this paper is to offer a reading of MGM that is resolute in its commitment to do justice to the book’s resistance against domestication within standard moral philosophy, while taking Murdoch at her word when she writes that her “whole argument can be read as moral philosophy” (MGM, 740). This commitment allows us to read MGM as an integrated unity. More importantly, it allows us to reassess Murdoch’s place in twentieth-century philosophy and to propose MGM as one of the works seeking to transform it. Our hope is that our reading will interest any philosopher who feels that something essential is missing in current typical practices in the discipline. (shrink)