Cora Diamond

One of Iris Murdoch's most characteristic philosophical ideas is that any way of understanding what moral philosophy is and how it may be practised will be shaped by deep-going conceptual attitudes, of which moral philosophers themselves may be unaware. In her own philosophical writings, she tried to bring out the role played by these attitudes, and to unsettle accepted ideas about the subject. I examine some of the elements in her thought which open up different ways of understanding the subject, and I discuss the relevance of these ideas to contemporary moral philosophy.

This essay is concerned with the question whether there is anything left of the Tractatus criticisms of Frege and Russell, if the principles on which those criticisms are apparently based are “thrown away.” I consider two examples of Tractarian arguments that criticize Russell, both of which may appear to rest on the context principle. I discuss only briefly Wittgenstein’s argument against Russell on the theory of types, but I look in detail at his criticism of Russell on generality. I show how that criticism can be understood independently of any supposed Tractarian principles. I also consider the importance of ideas in Russell’s Principles of Mathematics for the development of Wittgenstein’s thought, including the distinction between saying and showing.

Wittgensteinian ethics, it may be thought, is committed to detailed examination of realistically described cases, and hence to eschewing the abstract hypothetical cases, many of them quite bizarre, found in much contemporary moral theorizing. I argue that bizarre cases may be helpful in thinking about ethics, and that there is nothing in Wittgenstein's approach to philosophy that would go against this. I examine the case of the ring of Gyges from the Republic; and I consider also some contemporary arguments about thought-experiments in philosophy.

I want to argue for the importance of the notion human being in ethics. Part I of the paper presents two different sorts of argument against treating that notion as important in ethics. A. Here is an example of the first sort of argument. What makes us human beings is that we have certain properties, but these properties, making us members of a certain biological species, have no moral relevance. If, on the other hand, we define being human in terms which are not tied to biological classification, if we treat as the properties which make us human the capacities for reasoning or for self-consciousness, then indeed those capacities may be morally relevant, but if they are morally significant at all, they are significant whether they are the properties of a being who is a member of our species or not. And so it would be better to use a word like ‘person’ to mean a being that has these properties, to bring out the fact that not all human beings have them and that non-human beings conceivably might have them.