Quine's arguments against the attribution of essential properties de re to individuals have been the motivation for attempts at reinstating essentialism as a respectable metaphysical thesis and at defending the coherence of modal logic in general.

I shall argue here along somewhat different lines, that the particular version of essentialism Quine objects to is in fact untenable but that this conclusion is far from entailing a commitment to some version of conventionalism, and in particular that it does not entail the view that the only kind of necessity that is coherent is de dicto necessity.

In what follows, I shall assume, without arguing for it, that de re essentialism and subjunctive conditionals are intimately related, and in particular, that any version of de re essentialism which conflicts with our basic intuitions about subjunctive conditionals is untenable.

There have been many attempts of late to formulate a satisfactory theory of knowledge with which to replace the traditional justified true belief analysis. Almost all agree that it must be the case that in order for S to know that p; i.) p be true, and ii.) S believe that p. Although many argue that there must be a condition stating that S has adequate evidence for p, requirements other than i.) and ii.) are controversial. The most popular approach taken, however, is the addition of a requirement to the effect that for S to know that p there must be no other evidence against p strong enough to undermine S's belief that p, should this evidence come to S's attention. I shall call such a requirement a “defeasibility condition” and any theory containing such a requirement a defeasibility theory.

Defeasibility theories are quite effective in handling a certain kind of difficulty to which theories of knowledge are subject, namely problems dealing with what Harman has termed the social aspect of knowledge.

W. D. Ross is commonly considered to be a generalist about prima facie duty but a particularist about absolute duty. That is, many philosophers hold that Ross accepts that there are true moral principles involving prima facie duty but denies that there are any true moral principles involving absolute duty. I agree with the former claim: Ross surely accepts prima facie moral principles. However, in this paper, I challenge the latter claim. Ross, I argue, is no more a particularist about absolute duty than a utilitarian or a Kantian is. While this conclusion is interesting in its own right, it is also important, I argue, because it prevents us from overlooking Ross’s criterion of moral obligation and because it may have implications on the broader debate between particularists and generalists.

The problem of the Cartesian Circle has been with us ever since the publication of the Meditations. This is quite remarkable, since the error of circularity which Descartes is accused of having committed is not a subtle one but is, if there is such an error, a gigantic blunder which is not difficult to discover, which was pointed out to Descartes shortly after the Meditations appeared, and which completely undermines Descartes’ primary project, the establishment of sure and certain knowledge. It is incredible that Descartes, a slow and careful thinker with considerable philosophical talent, could have made such an obvious and egregious error. It is much more plausible that there really is no circularity in Descartes’ argument, and that the charges of circularity grow out of a misunderstanding of Descartes’ intention or of the way in which his argument progresses.

The incredible, of course, is possible, and I am not proposing that the question of the circle be resolved merely by dismissing it, nor am I suggesting that the text be ignored in order to force consistency onto Descartes’ thought.

Amongst the virtues extolled within analytic metaphysics are universality and parsimony. We value an account of what there is that includes everything, and we want a metaphysics that not only excludes what there isn't, but that also avoids the vice of double-counting. This vice leads to redundancies in one's ontology, such as asserting or entailing that there are, for example, minds over and above matter (if one is a materialist in the philosophy of mind), or groups of people over and above the individual people in those groups (if one is an individualist in the social sciences). An ontological view must be sufficiently pluralistic to achieve universality or completeness, yet sparse enough to respect parsimony or non-redundancy.

Along with such criteria as truth, comprehensiveness, explanatory adequacy, and simplicity (as well as others), philosophers of science usually also mention predictive accuracy as a criterion of theory choice. But while philosophers have devoted attention to the problem of the logical structure of scientific prediction, it seems that little attention has been devoted to the difficult question of what precisely constitutes predictive accuracy, at least ‘predictive accuracy’ in the sense in which I will discuss it here.

I will in this paper discuss the role of predictive accuracy in theory choice. But before that, I will address the problem of what constitutes predictive accuracy more generally and independently of its role in theory choice. I will approach the problem of predictive accuracy from a pragmaticpoint of view, and then try to assess the role of predictive accuracy in theory choice from that perspective.

Some interpret Reid's notion of a moral sense as merely analogical. Others understand it as a species of acquired perception. To understand Reid's account of the moral sense, we must draw from his theory of perception and his theory of aesthetic experience, each of which illuminate the nature and operation of the moral faculty. I argue that, on Reid's view, the moral faculty is neither affective nor rational, but representational. It is a discrete, basic, capacity for representing the real moral properties of humans and human conduct.

Self-reflexive or egocentric concern has been taken to present a serious problem for reductionist and eliminativist metaphysical accounts of personal identity. Philosophers have tended to respond in one of three ways: by continuing the search for a metaphysical account of identity that (prudentially if not morally) justifies egocentric concern; by accepting that egocentric concern can hold between persons who are not numerically identical; or by advocating the abandonment of egocentric concern altogether. All these approaches, however, distinguish between metaphysical ‘facts’ and affective responses to them. Exploring a well-known example from Bernard Williams, I argue that egocentric concern presents itself as irreducibly first-personal and as making its own set of numerical personal identity claims on the phenomenal level. Williams' example also points to the need to complicate the first/third person schema by factoring in a further distinction between present-tense and implicitly atemporal perspectives on the self. Once this move is made, we can see that the identity claims figured in first-person present-tense experience and those arrived at through metaphysical deliberation need to be distinguished. We should resist the temptation to privilege one perspective over the other in all instances, or to collapse them into a unitary account of selfhood.

We distinguish two conceptions of confinement – the agential conception and the comparative conception – and show that the former is intimately related to use in a way that the latter is not. Specifically, in certain conditions, agential confinement constitutes use and creates a special relationship that makes neglect or abuse especially egregious. This allows us to develop and defend an account of one important way in which agential confinement can be morally wrong. We then discuss some of the account’s practical implications, including its usefulness for decision-making in real-world contexts in which animals are confined.

I propose an analysis of lying with uninformative speech acts. The orthodox view states that lying is restricted to assertions. However, the growing case for non-assertoric lies made by presuppositions or conventional implicatures challenges this orthodoxy. So far, the only presuppositions to have been considered as lies were informative presuppositions. In fact, uninformative lies were not discussed in the philosophical literature. However, limiting the possibility of lying to informative speech acts is too restrictive. Firstly, I show that standard, uninformative presuppositions can also be lies. Secondly, I extend this picture into uninformative lies made by declarative statements. To implement my proposal, I do not need a new definition of lying. Recently popular commitment-based definitions of lying are able to properly handle uninformative lies.

According to a traditional account, understanding why X occurred is equivalent to knowing that X was caused by Y. This paper defends the account against a major objection, viz., knowing-that is not sufficient for understanding-why, for understanding-why requires a kind of grasp while knowledge-that does not. I discuss two accounts of grasp in recent literature and argue that if either is true, then knowing that X was caused by Y entails at least a rudimentary understanding of why X occurred. If my defense is successful, it would cast doubt on an influential account of the epistemic value of understanding.

The defence of necessity has had a long, though confused, legal career. Like self-defence, consent, duress, insanity and mistake of law, necessity is rooted in moral intuitions about when conduct which causes harm to another's person or property is not wrong, or should be tolerated, permitted or praised. If a man is literally starving to death and steals a loaf of bread, we are reluctant to say that his extreme circumstances should make no difference at all to the way we treat him at trial. And if two men, adrift at sea, are clinging to a log which can only support the weight of one, we are once again reluctant to say that if one pushes the other off the log, it is just a case of murder. These intuitions are deepseated; but it is extremely difficult to articulate the defence they seem to support, or to isolate the circumstances which mark the difference between a situation where the defence ought to apply and where it ought not.

I argue that what evidence an agent has does not supervene on how she currently is. Agents do not always have to infer what the past was like from how things currently seem; sometimes the facts about the past are retained pieces of evidence that can be the start of reasoning. The main argument is a variant on Frank Arntzenius’s Shangri La example, an example that is often used to motivate the thought that evidence does supervene on current features.

Parfit denies that the introduction of reasons into our ontology is costly for his theory. He puts forth two positions to help establish the claim: the Plural Senses View and the Argument from Empty Ontology. I argue that, first, the Plural Senses View for ‘exists’ can be expanded to allow for senses which undermine his ontological claims; second, the Argument from Empty Ontology can be debunked by Platonists. Furthermore, it is difficult to make statements about reasons true unless these statements include reference to objects in reality. These arguments show the instability of Parfit’s claimed metaethical advantages over naturalism.

A century ago historian of science George Sarton argued that “science is our greatest treasure, but it needs to be humanized or it will do more harm than good” (1924). The systematic cultivation of an “historical spirit,” a philosophical appreciation of the dynamic nature of scientific inquiry, and a recognition that science is irreducibly a “collective enterprise” was, on Sarton’s account, crucial to the humanizing mission he advocated. These elements of Sarton’s program are more relevant than ever as philosophers of science articulate research programs that take seriously the contextual factors, situated interests, and historical contingencies that shape the sciences we study. I trace the trajectory of a long-term philosophical engagement with archaeology that illustrates a succession of ways in which social, cultural, and political values configure inquiry, culminating in a program of collaborative research that raises the question of what role philosophers can usefully play when the challenges of humanizing scientific practice have centrally to do with navigating entrenched asymmetries of power.

Both Descartes and Leibniz are on record as maintaining that acting freely requires that the agent ‘could have done otherwise.’ However, it is not clear how they could maintain this, given their other metaphysical commitments. In Leibniz's case, the arguments connected with this are well-rehearsed: it is argued, for example, that Leibnizian doctrines such as the Principle of Sufficient Reason and the thesis that God must will the best possible world preclude that the human could ever do other than she did. The question of whether Descartes can maintain that the agent is able to do otherwise in the face of his wider metaphysical commitments has received comparatively little attention. However, Chappell has recently noted that Descartes's thesis that God is the ‘total cause’ of everything seems to preclude the possibility of human freedom (where this includes the ability to do otherwise).

This essay is about a theory of belief and a theory of belief reports formulated within the framework of DR (Discourse Representation) theory. DR theory’s treatment of definite and indefinite noun phrases leads to a superior treatment of belief reports involving singular terms. But it also provides something of even greater potential benefit to a treatment of belief: a (highly idealized) theory of how recipients recover verbally encoded information and of what form such information must take. The use of this account of verbally encoded information causes a distinctive treatment of belief to emerge. I will focus here on an analysis within this framework of how beliefs arise from the acceptance of verbal information and how the process of belief formation interacts with the process of belief report interpretation.