 We will see the same need to understand the concepts of action and intention by studying her most well-known paper, “Modern Moral Philosophy” (MMP). There Anscombe presses three theses. First, doing moral philosophy is useless, and will remain so until we have an adequate philosophy of psychology, which is a long way away. Second, moral philosophers in any case should abandon the concepts of moral obligation, moral duty, and the moral “ought”, for these concepts make sense only in several conceptions of ethics none of which generally survives. Third, there are no important differences among the well-known English moral philosophers from Sidgwick onwards. Each of Anscombe’s three theses is bold; taken together, they are shocking.