The paper discusses the views held by Sergot and Prakken [22] on the import, or non-import, of the identity principle for conditional obligation within a preference-based semantics. This is the principle ©(A/A). The key point is to understand and appreciate what unconditional obligations the principle allows us to detach, and from what premises. It is argued that it does not license the move fr...

Frege’s logicist program requires that arithmetic be reduced to logic. Such a program has recently been revamped by the “neologicist” approach of Hale & Wright. Less attention has been given to Frege’s extensionalist program, according to which arithmetic is to be reconstructed in terms of a theory of extensions of concepts. This paper deals just with such a theory. We present a system of secon...

Concern with material equality as the central form of distributive justice is a very modern idea. Distributive justice for Aristotle and many other writers for millennia after him was a matter of distributing what each ought to get from merit or desert in some sense. Many, such as Hume, thought material equality a pernicious idea. In the medieval village life of Bodo, villagers knew enough abou...

I have not been able to locate any critique of Hume on substance by a Schoolman, at least in English, dating from Hume's period or shortly thereafter. I have, therefore, constructed my own critique as an exercise in ‘post facto history’. This is what a late eighteenth-century/early nineteenth-century Scholastic could, would, and should have said in response to Hume's attack on substance should ...

Before I begin, I want to add my own personal reminiscence. I knew Dave Hume for almost 14 years, slightly for the first 4 and well for the last 10. I first talked to him at an elevator entrance at the Greenbrier Hotel in West Virginia, in April, 1959, and for the last ti!1le in April, 1973, in the lower lobby of the Century Plaza Hotel in Los Angeles. In May, 1973, I was in the railroad statio...