In Morals by Agreement David Gauthier proposes four criteria for classifying a society's advancement toward ‘higher stages of human development.' Significantly, these criteria — material well-being, breadth of opportunity, average life-span, and density of population — do not include as an equally valuable achievement the society's capacity to sustain its standard of living (288). Nonetheless Gauthier presents three arguments intended to show that a community founded on his distributive theory will view depletionary resource policies as unreasonable and unacceptable. I shall contend that these arguments do not succeed in motivating sustainable rates of resource exploitation. Furthermore, I argue that if truly just and rational resource use policies can be arrived at, such policies could only succeed by employing a conception of property rights substantially different from Gauthier's.

Why should one be moral? This question is nearly as old as the discipline of moral philosophy itself; it has been troubling ethicists ever since Glaucon challenged Socrates to disprove that “the life of the unjust man is much better than that of the just.” To find an answer to the question of why one should be moral has been taken to be one of the most fundamental tasks of moral philosophy. And even a casual survey of the history of ethics will reveal that there are many ways of trying to answer the question.

Some contemporary Russellians, defenders of the view that the semantic content of a proper name, demonstrative, or indexical is simply its referent, are prepared to accept that view's most infamous apparent consequence: that coreferential names, demonstratives, indexicals, etc. are intersubstitutable salva veritate, even in intentional contexts. Nathan Salmon and Scott Soames argue that our recalcitrant intuitions with respect to the famous apparent counterexamples are not semantic intuitions, but rather pragmatic intuitions. Strictly and literally speaking, Lois Lane believes, and even knows that Clark Kent is identical to Superman, since she believes and knows that Superman is identical to Superman. Salmon and Soames attempt to soften our reaction to this shocker by allowing that it is typically misleading to utter the sentence ‘Lois Lane knows that Clark Kent is identical to Superman,’ since it pragmatically implicates, without semantically entailing, that Lois Lane would accept the sentence ‘Clark Kent is identical to Superman.’ Our compulsive tendency to claim that ‘Lois Lane knows that Clark Kent is Superman’ is false, rather than merely misleading, is due to a confusion between semantics and pragmatics, between truth conditions and conditions of appropriateness of utterance.

A theory of human action should provide an account of the connection between reason and action when an agent acts for a reason, and it should provide an account of the explanatory force of explanations of actions. On the causal theory of action, the connection between reasons and actions is that of event causality and explanations of actions are modeled on ordinary causal explanations, where events are explained by citing other events as their causes. A once common objection to the causal theory had it that reasons cannot be causes, since explanations of actions do not fit reason and action into a nomic nexus expressed by laws or law-like generalizations. Against this train of thought, Donald Davidson defends a version of the causal theory by arguing that the view that the connection between reasons and actions is that of event causality and the view that explanations of actions do not fit reasons and actions into a nomic nexus are compatible. Davidson's theory generated a small industry of criticism focusing on the implications of his version of the causal theory for the nature of the causal connection between reasons and actions.

In Plato's Republic, Socrates argued that true artisans work not in their own interest but for the good of that upon which they practice their art. So the true ruler is one who works for the good of the city or the citizens, not the ruler's own self-interest. Many would hold, with Leo Strauss, that Machiavelli contends the very opposite — that for him the true prince ruthlessly seeks self-interest and personal power. I think this is too simple a reading of Machiavelli.

I do not want to argue that Machiavelli is not a Machiavellian — that he does not counsel evil. But I do want to argue that Machiavelli's advice to the prince is to avoid self-interest. The prince is encouraged to act for the good of the state. It is true that in Machiavelli's opinion this will often require doing evil, and it is also true, one must admit, that Machiavelli does not really expect the prince to succeed in avoiding self-interest.

In the grand tradition, philosophical ontology was considered logically and epistemologically prior to scientific ontology. Like many contemporary philosophers of science, we consider this to be a mistake. There is two-way traffic between philosophical and scientific ontologies; the more we learn about what there actually is, the more we learn about what can be and what must be, and vice versa. But that is not the present topic; here we focus on the ontology or ontologies of science, not traditional philosophical ontologies or the traffic between scientific and philosophical ontologies.

Propositional attitudes, like believing and asserting, are relations between agents and propositions. Agents are individuals who do the believing and asserting; propositions are things that are believed and asserted. Propositional attitude ascriptions are sentences that ascribe propositional attitudes to agents. For example, a propositional attitude ascription α believes, or asserts, that S is true iff the referent of a bears the relation of believing, or asserting, to the proposition expressed by s. The questions I will address have to do with the precise nature of propositions, and the attitudes, like belief, that we bear to them.

I will assume both that propositions are the semantic contents of sentences, and that the proposition expressed by a sentence is a structured complex made up of the semantic contents of the parts of the sentences that express it.

Donald Davidson infamously claims that belief is in its nature veridical, and that skepticism is for this reason fundamentally incoherent. To those who take the issue of external world skepticism seriously, Davidson's arguments may seem to involve a conjuring trick. In particular, his invocation of an ‘omniscient interpreter’, whose intelligibility supposedly ensures that our beliefs must be largely true, has the air of incense and lantern-rubbing about it. Davidson's claim has received considerable critical response in the literature, almost all of it negative. In my view, some commentators have indeed lit on a critical and controversial lemma in Davidson's argument, but this basic result has been obscured by being presented amidst an array of other criticisms that simply make no sense from a Davidsonian point of view. The aim of this paper is to clear away some of the confusion that stands in the way of a more productive evaluation of Davidson's important claim.

1. Metaphysical Realists have traditionally relied upon the skeptic to give substance to the idea that truth is, in the words of Hilary Putnam, 'radically non-episternic,’ forever outstripping, in principle at least, the reach of justification. What better model of truth so conceived, after all, than the skeptic's contention that even our firmest convictions might be mistaken in that we might be the victims of demonic deception or the machinations of an evil scientist? But the availability of this favorite model of Realist truth, encapsulated in the claim that we might be ‘brains in a vat,’ has been called into question by Putnam in the opening chapter of Reason, Truth, and History. Putnam contends that, if we grant the Realist notion of truth, as referentially mediated correspondence to THE WORLD, then, given certain plausible constraints on reference, we can know that we are not brains in a vat (or, more accurately, ‘brains in a vat' of a particular kind, as we shall see).

1 Introduction

Numerous solutions have been proposed to the semantic paradoxes. Two that are frequently singled out and compared are the following. The first is that according to which paradoxical sentences are neither true nor false — as it is sometimes put, they are semantic gaps. The second is that according to which paradoxical sentences are both true and false — as it is sometimes put, they are semantic gluts (dialetheias). Calling the first of these a solution is, in fact, somewhat misleading: it is rather like calling an opening gambit a game of chess. For the solution runs into severe problems almost immediately, and so can be only the first of a series of (often ad hoc) moves made to defend the original weak opening. Nonetheless, the symmetry involved in the gap and glut solutions is obvious enough to make the comparison a natural one.

Propositional Attitudes defends an account of ‘believes’ on which the verb is contextually sensitive. x believes that S says (quite roughly) that x has a belief which is ‘well rendered’ or acceptably translated by S; since contextually variable information about what makes for a good translation helps determine the extension of ‘believes,’ the verb is contextually sensitive. Sider and Soames criticize this account. They say it has unacceptable consequences in cases in which we make multiple ascriptions of belief to a single individual - as happens, for example, when we say that Odile believes such and such, that the woman in the corner believes so and so, but are ignorant of the identity of Odile and the woman in the corner.

I will distinguish two objections along these lines, and argue that neither is forceful. The objections differ as to whether or not the speaker mistakenly presupposes that the believers under discussion are distinct.

I Introduction

At Metaphysics Γ 3, Aristotle argues that it belongs to a single discipline, which he calls first philosophy, to investigate both substance (οὐσία) and a special class of claims which includes among its members the principle of non-contradiction (PNC). At Γ 4, after insisting that the PNC is, strictly speaking, indemonstrable, he sets forth a series of sketches of refutative arguments intended to show how it can, nonetheless, be substantiated. Traditionally, his main refutative argument has been taken to be embedded in the passage which runs from 1006a31 to b34. In that passage, he tries to show that anyone who denies the PNC and who can then be led, by means of an artfully arranged series of questions, to agree (whether willingly or grudgingly) to a few seemingly modest theses about the signification of expressions of a certain type — which Aristotle illustrates with the general term ‘man’ (ἄνθρωπος) — is thereby logically committed to the following modal claim: ‘It is necessary, then, if it is true to say that something is a man, that it be a bipedal animal' (1006b28-30).

Particularism is in vogue in ethics today. Particularism is sometimes described as the idea that what is a sufficient moral reason in one situation need not be a sufficient moral reason in another situation. Indeed, it has been held, on particularism, what is a reason for an action in one situation might be a reason against the same type of action, or might not be a reason at all, in another situation. However, this description is insufficient. Even a generalist, such as a utilitarian, may admit that, what is in one situation a sufficient reason for the rightness of an action may, in another situation, be a sufficient reason for its wrongness. For example, the fact that if I shoot at a certain person, I kill him, may, in one situation, be a sufficient reason not to shoot at him. It is sufficient for the wrongness of shooting at him if, in the situation, shooting at him suffices to guarantee that welfare does not get maximized. He is killed, say, and deprived of future pleasure, with no positive ‘side-effects’ whatever.

An account of judgment ought to explain the fact that a judgment is, or may be, about some object. A judgment may be about some object if it contains some part, or term, which is related to the object, on the one hand, and related to- ‘combined with’ — the other parts of the judgment, on the other, in such a way that the whole judgment is consequently about that object. The relation of that term to the object may be called ‘reference.’ (If the judgment is analyzed into intuition and concept, then it is the relation whereby the intuition is of whatever it may be of.) It is the relation of ‘reference’ that might make a judgment ‘objective,’ and make it be about one or another particular object; and it is the relation combining the referring term (perception, intuition) with another term (concept, predicate) that makes the whole thing a judgment; that is, that makes the whole thing represent something as being true of the object referred to.

So begins the first of Locke's Two Treatises of Government. But this Englishman, gentleman, and self-styled ‘lover of liberty’ was not himself above pleading for slavery when it suited him. That plea has been an embarrassment to his admirers ever since. Locke attempted to legitimize slavery by portraying it as a form of punishment for crimes committed where no central political authority or justice system exists. If a victim of an assault is entitled to take his attacker's life in self-defense, Locke reasoned, he must also be entitled to take his attacker's liberty.

Analysis of the nature of voting is fundamental to an understanding of the nature and value of democracy. Three questions ought to be distinguished concerning voting. First, how are we to conceive of the activity of voting? What is its nature? Second, what is it that people aim at when they vote? What are the grounds on which people vote, the reasons with which they justify their vote? And third, what ought people to aim at when they vote? What are the relevant grounds for voting in one way or another? These last are explicitly normative questions. At times individuals vote on the basis of concerns which are not appropriate to the issues involved. The first question is not a question of psychology or of value; it is a metaphysical question. What is the nature of voting? How is it possible to count votes? Two answers are widely given in the literature. The first is that voting consists in the expression of preference. On this kind of view, either a vote is a preference or it is a fairly direct and unambiguous expression of the preference of the voter.

In 1989 the philosopher and self-described feminist Christina Sommers published a short essay — ‘an opinion piece,’ she called it — that was eventually developed into and published as a philosophical article. In this essay Sommers criticized ‘feminist philosophers’ (her term) for being ‘oddly unsympathetic to the women whom they claim to represent.’ Specifically, Sommers accused these philosophers of ignoring the ‘values of the average woman’ and of being caught up in an ‘ideological fervor.’ To emphasize her point that the so-called feminist philosophers have lost touch with ‘the average woman,’ Sommers wrote that ‘One must nevertheless expect that many women will continue to swoon at the sight of Rhett Butler carrying Scarlett O'Hara up the stairs to a fate undreamt of in feminist philosophy.’

Descartes contends that he, or his mind, is really distinct from his body. Many philosophers have little patience with this claim. What could be more obvious than that the mind depends on the body? But their impatience often dissolves when they recognize that Descartes only asserts a de re modal statement. To say that one thing is really distinct from another is to say that each can exist apart from the other (AT VII 162: CSM II 114). But should we grant Descartes this de re modal claim itself?

Descartes's argument for the real distinction is based on the assumption that clear and distinct conception provides a reliable guide to possibility.

John Rawls's famous difference principle is capable of at least four distinct statements, each of which occurs in A Theory of Justice. According to what I shall term the Crude Principle it is a necessary and sufficient condition for the justice of an institutional scheme which expands social and economic inequality that, subject to the satisfaction of more weighty principles, it increases the level of advantage of the least advantaged. Expressing this principle Rawls writes that,

Hume finds himself in an appalling state during Treatise I iv 7 (the conclusion of Book I). He is almost bereft of beliefs; he believes, for a short time, only that he cannot believe anything else. But, being an assiduous student of human nature, Hume makes this extreme skeptical crisis into material for naturalistic study. He carefully reports how extreme skepticism comes about, what it is like, and how it passes. So I iv 7 has two aspects: involved personal experience of a skeptical crisis, and detached naturalistic reflection on that crisis. Interpreting the text correctly requires taking both these aspects seriously.

An old interpretive tradition ignores or downplays Hume's detached naturalistic reflections in I iv 7, and focuses only on his involved personal experience of skepticism. Oddly enough, interpretations in this tradition tend to treat Hume's experience dismissively and derisively.