I compare three sorts of case in which philosophers have argued that we cannot assert the Law of Excluded Middle for statements of identity. Adherents of Smooth Infinitesimal Analysis deny that Excluded Middle holds for statements saying that an infinitesimal is identical with zero. Derek Parfit contended that, in certain sci-fi scenarios, the Law does not hold for some statements of personal identity. He also claimed that it fails for the statement ‘England in 1065 was the same nation as England in 1067’. I argue that none of these cases poses a serious threat to Excluded Middle. My analysis of the last example casts doubt on the principle of the Determinacy of Distinctness. While David Wiggins's ‘conceptualist realism’ provides a metaphysics which can dispense with that principle, it leaves no house-room for infinitesimals.

This paper is a response to the suggestion that processes provide a better framework for interpreting science, biological science especially, than do substances. The philosopher of substance is ill-prepared, it has been suggested, for the question ‘how a combination of processes can maintain the appearance of stability and persistence in an entity that is fundamentally only a temporary eddy in a flux of change’. In response, I defend a plural ontology of process, activity, event and continuant, and show how a sortalist philosophy of substance that makes Hilary Putnam's distinction of ‘realism’ from ‘metaphysical realism’ can treat disputed questions concerning the identity and individuation of colonial siphonophores, slime moulds and plant-colonies.

1. Hilary Putnam's conception of ethics is not best understood as a form of ‘moral realism’, but as a position consequent upon the pragmatist understanding of the relation between truth and rational acceptability – ideas that Putnam argues are not confined to laboratory science. Just as our conception of the visible world is founded in reason as informed by sense perception, why cannot our moral notions appear to reason itself as that is shaped or informed by our situation and our nature, our vital needs and our capacity to respond to those needs through the invention and refinement of ethical notions? In following out this proposal, I try to show how well Putnam's conception of rational acceptability can consist and cohere with the constraint upon enquiry that C. S. Peirce calls ‘secondness’. 2. Putnam writes ‘we invent moral words for morally relevant features of situations, which lead to further refinements of our moral notions’. Enlarging on this claim, the paper reconstructs some of the ways in which human beings can arrive through a practical reason of the unforsakeable at an ethos – a shared way of living – and at what Putnam calls ‘a moral image of the world’. 3. The paper then sets out some of Putnam's conclusions concerning agreement and disagreement, the supposed dichotomy of fact and value, the supposed problem of the perception of value, and the implausibility of Lionel Robbins's claim that economics and ethics can have no closer relation than mere juxtaposition. 4. In conclusion, the paper touches upon the merits or demerits of the very idea of a ‘moral reality’.

1. I begin with a citation from Our Final Century. Its author is Sir Martin Rees, the current President of the Royal Society.

The great variousness and plurality of goodness has given comfort to general scepticism about values and a multitude of metaethical attitudes or predilections. But is this variousness and plurality really the hotch-potch it has appeared? The paper recapitulates and expands von Wright's typology of the varieties of goodness and looks to explain the order or system that underlies the phenomena by developing and extending a conjecture of Aristotle's, the so-called ‘focal hypothesis’, and combining therewith a suggestion of von Wright's, to the effect that the central case of something good is the faring well of a being. By means of focal hypothesis, one may account fairly well for medical, technical, instrumental, beneficial and utilitarian goodness. Other varieties such as hedonic and ethical goodness complicate the picture, as also do all cases where it seems that an antecedent kind of goodness impinges upon a being. These complications mirror in part the finding that the human scale of values is not a scale exclusively of human values.

1. Conferences on the subject of need are lamentably rare. All the more honour then for this one to the Royal Institute of Philosophy (an organisation long dedicated to saving philosophy’s better self from its worse), to the Philosophy Department at Durham, and to Soran Reader, the organizer and editor.1. Conferences on the subject of need are lamentably rare. All the more honour then for this one to the Royal Institute of Philosophy (an organisation long dedicated to saving philosophy’s better self from its worse), to the Philosophy Department at Durham, and to Soran Reader, the organizer and editor.

1. Conferences on the subject of need are lamentably rare. All themore honour then for this one to the Royal Institute of Philosophy(an organisation long dedicated to saving philosophy's better selffrom its worse), to the Philosophy Department at Durham, and toSoran Reader, the organizer and editor.

2. Someone asked me recently what first made me think it wasimportant for philosophy to secure for itself a substantial andserious idea of needing and of thing vitally needed. What made itseem imperative to safeguard these categorizations from conceptualand rhetorical degradation? What suggested that there was aproblem here?

The paper seeks to interpret and then to criticize Wittgenstein's Tractatus Logico-Philosophicus paragraph 6.4 to 7 (the end), connecting this so-called mystical section with the “Lecture on Ethics” given in Cambridge in 1929, the Notebooks, and a passage in the Big Typescript. Interpretive and critical efforts focus on the claims: (1) that if having intrinsic value, good or evil, is nothing zufällig, then its basis is nothing in the world; (2) that value can only enter through the willing subject; (3) that “how things are in the world is a matter of indifference for what is higher”. Concerning (1), it is proposed that the zufällig is here that which simply or merely happens (or is brute fact). The argument for (1) rests on Wittgenstein's misconception of the categorical. It is remarked that (1) and (3) result in a philosophy of life that is unliveable. Witness the travails of Wittgenstein's own life and his struggle to “get over a particular fact”. Finally (3) will even undermine (2), which is in any case fatally ambiguous. In conclusion, it is suggested that both the stresses and strains that are induced within the Tractatus itself by its circumscription of the sayable and the difficulties of (1) (2) (3) can be overcome within Wittgenstein's later philosophy, but in ways already prefigured in the doctrine of “showing” as that appears in both Tractatus and “Lecture on Ethics”.

Timothy Williamson offers a proof of the counterintuitive claim that, if an object exists, then it exists necessarily. David Wiggins argues that this result reveals the philosophical disadvantage of a first level (or ‘ticking over’) view of the very ‘exists’ and the advantage of the second level account offered by Frege and Russell. The author seeks to show how, using an idea of G. Evans but without the use of the resources of ‘free logic’, all occurrences of ‘exist’, including its occurrence in true, negative existential, singular statements, can be accommodated to the Frege–Russell view and accorded the intuitively required modal status.

The theme announced for these lectures is the philosophy of value. It may seem that moral philosophy, along with aesthetics, the philosophy of art, the philosophy of environment … ought to be a proper part of the philosophy of value. I have chosen mottoes to illustrate the dangers of that supposition.

1. There is a tendency nowadays for linguists, philosophers and other theorists of language, to dismiss the notion of an object like the English language or the Polish language as simply mythological or mythopoeic—as of no interest to any serious science of language. Some theorists even appear to deny that there are such things as languages (in the plural). ‘This notion [of a public language] is unknown to empirical inquiry and raises what seem to be irresolvable problems’, Chomsky said in a lecture he gave recently in London (1994).

In 1936, in a chapter of Language, Truth and Logic clearly influenced by Hume (though inconsistent with Hume) and influenced also (Ayer later conjectured) by Ogden's and Richards's The Meaning of Meaning (1923), Ayer claimed that judgments of value, in so far as they are not scientific statements, are not in the literal sense significant but are simply expressions of emotion which can be neither true nor false. To say ‘You acted wrongly in stealing that money’ is not to state any more than one would have stated by merely saying ‘you stole that money’. To add that the action was wrong is not to make a further statement about it, but simply to evince one's moral disapproval. ‘It is as if I had said “you stole that money” in a peculiar tone of horror, or written it with the addition of some special exclamation mark. The tone or the exclamation mark adds nothing to the literal meaning of the sentence. It merely serves to show that the expression of it is attended by certain feelings of the speaker’ (LTL, 107).

Locke defined a person as ‘a thinking intelligent being, that has reason and reflection, and can consider itself as itself, the same thinking thing, in different times and places” (Essay, II, xxvii, 2). To many who have been excited by the same thought as Locke, continuity of consciousness has seemed to be an integral part of what we mean by a person. The intuitive appeal of the idea that to secure the continuing identity of a person one experience must flow into the next experience in some ‘stream of consciousoness” is evidenced by the number of attempts in the so-called constructionalist tradition to explain continuity of consciousness in terms of memory, and then build or reconstruct the idea of a person with these materials. The philosophical difficulty of the idea is plain from the failure of these attempts. Hindsight suggests this was as inevitable as the failure of the attempt (if anyone ever made it) to make bricks from straw alone—and as a failure just as uninteresting. Which is not to deny that the memory theorist might get from it a sense that some of the difficulties in his programme have arisen from his leaving flesh and bones, the stuff of persons, out of his construction.

When we try to think about the causal nexus and the physical nature of the world as a whole we may be struck by two quite different difficulties in finding room in it to accommodate together (a) knowledge or reasoned belief and (b) causal determinism. (a) may seem to us to exclude (b) and (b) may seem to us to exclude (a). Taking it as a fact that there is knowledge and that knowledge seems to be indefinitely extensible, it has been felt by some philosophers that we can disprove total determinism by showing that if there were laws of nature which purported to govern all movements of matter in the universe there would still be something which even an ‘all-knowing’ predicter could not predict, viz. his own predictions or his own actions; and that given enough knowledge any agent could refute anybody else's predictions of his actions. So it has been thought that the phenomenon of knowledge somehow shows there cannot be laws to govern all movements of matter in the universe. This comfortably anodyne reflection is examined in the second part of the lecture. It elevates human minds and even confers a sort of cosmic importance on them. The other difficulty in making room for both (a) and (b) is in some loose sense the dual of this. Instead of taking knowledge for granted and questioning total determinism, it merely takes causality for granted but then deduces the total impossibility of knowledge. It simply asks: ‘How can we take a belief seriously, or consider it seriously as a candidate to be knowledge, if it is no better than a simple physical effect?’ This is a more pessimistic reflection and I shall begin with it.