Most people believe some moral propositions are true. Most people would say that they know that rape is wrong, torturing people is wrong, and so on. But despite decades of intense epistemological study, philosophers cannot even provide a rudimentary sketch of moral knowledge. In my view, the fact that we have very strong epistemic confidence in some fundamental moral propositions and the fact that it is extremely difficult for us to provide even the basics of an account of moral knowledge (...) gives us an important clue. Both of these facts stem from the very nature of moral knowledge. In this paper I provide an intuitionist account of moral knowledge. I try to remove misunderstanding and add to our understanding of the contemporary account of self-evident moral propositions. For a theory of moral knowledge to be acceptable it must explain both the moral knowledge we have and why it is so very difficult for us to explain. My theory meets both requirements. (shrink)

In this paper I offer a solution to scepticism about the world which neither embraces idealism, nor ends in a stalemate, nor begs the question against the sceptic. In the first part of the paper I explicate the sceptical argument and try to show why it has real force. In the next part of the paper I propose a version of the relevant possibilities approach to scepticism. The central claim of the proposed solution is that a sceptical possibility undermines knowledge (...) only if the possibility is true in some close possible world. But since there is no reason to believe that I am deceived by an evil demon or that I am a brain in a vat in some close possible world, there is no reason to accept an essential premise of the sceptical argument, i.e. that the sceptical scenarios are relevant possibilities. Finally, I argue that the solution proposed does not embrace idealism, end in a stalemate, or beg the question. (shrink)

What I wish to consider here is how understanding something is related to the justification of beliefs about what it means. Suppose, for instance, that S understands the name “Clinton” and has a justified belief that it names Clinton. How is S’s understanding related to that belief’s justification? Or suppose that S understands the sentence “Clinton is President”, or Jones’ assertive utterance of it, and has a justified belief that that sentence expresses the proposition that Clinton is President, or that (...) Jones said that Clinton is President. How is S’s understanding related to the justifications of these beliefs? (shrink)

When are you in a position to rely on p in practical reasoning? Existing accounts say that you must know that p, or be in a position to know that p, or be justified in believing that p, or be in a position to justifiably believe it, and so on. This paper argues that all of these proposals face important problems, which I call the Problems of Negative Bootstrapping and of Level Confusions. I offer a diagnosis of these problems, and (...) I argue that an adequate epistemic norm must be transparent in the following sense: According to the correct epistemic norm, a consideration counts in favor of (or against) relying on p in practical reasoning iff, and to the extent that, this consideration also counts in favor of (or against) p being true. I introduce a candidate epistemic norm that satisfies this condition. According to this norm, one should rely on p in practical reasoning only if it must be that p. If we adopt a non-factualist account of “must”, this amounts to a novel and attractive proposal, a proposal that satisfies the transparency condition. (shrink)

Some foundationalists have argued that epistemic warrant may be in some measure determined by features of a doxastic agent's circumstances that are not necessarily accessible to the agent. 'externalist' views of this sort have been attacked recently by laurence bonjour on the grounds that they are at odds with the ordinary notion of "epistemic rationality". I suggest that this need not be so and argue that bonjour fails to provide convincing reasons for the rejection of externalist forms of foundationalism.

I clarify and defuse an argument for skepticism about justification with the aid of some results from recent linguistic theory. These considerations illuminate debates about the structure of justification.

I first clarify the idea that blameworthiness requires consciousness as the view that one can be blameworthy only for what is a response to a reason of which one is conscious. Next I develop the following argument: blameworthiness requires exercising control in a way distinctive of persons and doing this, in view of what it is to be a person, requires responding to a reason of which one is conscious. Then I defend this argument from an objection inspired by Arpaly (...) and Schroeder according to which responding to moral reasons suffices for exercising control distinctive of persons. (shrink)

Dans cet article, je discute l’épistémologie de Pascal Engel, en particulier sa stratégie de réponse aux arguments sceptiques dans Va Savoir!. Après avoir présenté de manière synthétique les grands axes de cette stratégie, je reviens avec plus d’attention sur deux éléments de cette stratégie avec lesquels je suis en désaccord : le rejet par Engel de tout principe de réflexivité épistémique, et le rejet par Engel d’une défense « forte » du sens commun. Je défends qu’un certain principe de réflexivité (...) ne peut pas être raisonnablement rejeté ; puis je montre que l’épistémologie d’Engel ne permet pas d’apporter une réponse satisfaisante au défi sceptique que pose le principe de Méta-Cohérence. Enfin, je soutiens que la seule manière de répondre de manière satisfaisante à ce défi est de recourir à une défense « forte » du sens commun, c’est-à-dire à une stratégie dans laquelle les propositions de sens commun sont justifiées parce qu’elles sont de sens commun. (shrink)

Moderate epistemic akrasia is the state a subject is in when she believes that p and suspends judgment about whether her evidence supports p. In this article it is argued that, given a certain understanding of the attitude of suspension of judgment, moderate epistemic akrasia is doxastically irrational. The paper starts with a brief introduction that makes explicit some background notions and clarifies the dialectics of the debate. Second, the well-known distinction between propositional and doxastic rationality is introduced and some (...) cases of improper basing are discussed. Third, two different cases are considered in which one might argue that moderate epistemic akrasia is doxastically rational, and it is argued that none is successful. Fourth, several objections are presented and answered. Finally, some conclusions are drawn. (shrink)

The prequel to this paper introduced the topic of iteration principles in epistemology and surveyed some arguments in support of them. In this sequel, I'll consider two influential families of objection to iteration principles. The first turns on the idea that they lead to some variety of skepticism, and the second turns on ‘margin for error’ considerations adduced by Timothy Williamson.

O problema do conhecimento fácil tem sido definido na literatura epistemológica contemporânea com um problema que nasce de duas formas distintas. O propósito deste ensaio é mostrar que essas supostas maneiras diferentes de gerar o mesmo problema em verdade originam dois problemas distintos, que requerem respostas distintas. Um deles está relacionado à aquisição fácil (inaceitável) de conhecimento de primeira-ordem e o outro à aquisição fácil (inaceitável) de conhecimento de segunda-ordem. Além disso, é apresentada a maneira como o infinitismo, a teoria (...) epistêmica segundo a qual as razões que justificam uma opinião devem ser infinitas em número e não-repetidas, pode lidar com cada um desses problemas. (shrink)

When we get evidence that tells us our belief-forming mechanisms may not be reliable this presents a thorny set of questions about whether and how to revise our original belief. This article analyzes aspects of the problem and a variety of approaches to its solution.

One of the main goals of epistemologists is to provide a substantive and explanatory account of the conditions under which a belief has some desirable epistemic status (typically, justification or knowledge). According to the reliabilist approach to epistemology, any adequate account will need to mention the reliability of the process responsible for the belief, or truth-conducive considerations more generally. Historically, one major motivation for reliabilism—and one source of its enduring interest—is its naturalistic potential. According to reliabilists, epistemic properties can be (...) explained in terms of reliability, which in turn can be understood without reference to any unreduced epistemic notions, such as evidence or knowledge. This article begins by surveying some of the main forms of reliabilism, concentrating on process reliabilism as a theory of justification. It proceeds to review some of the main objections to reliabilism, and some of the responses that have been offered on the reliabilist’s behalf. After canvassing some recent developments in reliabilist epistemology, the article concludes by considering various cousins and spin-offs of reliabilist epistemology, including virtue reliabilism and various evidentialist-reliabilist hybrids. (shrink)

The dissertation examines the nature and epistemic implications of epistemic source circularity. An argument exhibits this type of circularity when at least one of the premises is produced by a belief source the conclusion says is legitimate, e.g. a track record argument for the legitimacy of sense perception that uses premises produced by sense perception. In chapter one I examine this and several other types of circularity, identifying relevant similarities and differences between them. In chapter two I discuss the differences (...) between internalist and externalist analyses of justification. I examine in detail foundationalist and non-foundationalist versions of internalism, and go on to consider how one might characterize externalism: either negatively, by denying particular internalist theses, or positively, in terms of a theory offering different conditions for justification. I discuss the views of reliabilist foundationalists at length. In chapter three I present the internalist objection to externalism that the latter mistakenly permit one to be justified in believing the conclusion of an epistemic source circular inference. I explain the externalists' response that it is not in virtue of their externalism that they permit epistemic source circularity but rather their foundationalism; thus, internalist foundationalists must permit epistemic source circularity as well. I evaluate the positions of several internalists, most of them explicitly foundationalists, and argue that they too cannot avoid permitting epistemic source circularity. In the final chapter I consider whether such circularity is vicious, even though both internalist and externalist foundationalists permit it. I argue that one can sustain an objection to epistemic source circularity by imposing a non-question-begging requirement on justification and explain how respecting this requirement leads one to a non-foundationalist view. I conclude by considering the objection that question-begging leads to a certain arbitrariness in belief formation that should give the foundationalist pause when it comes to determining, at the beginning of inquiry, which beliefs are justified and which are not. The dissertation is primarily concerned with making clear the possible skeptical and non-skeptical positions one can take towards epistemic source circularity. I do not argue for the truth of a particular metaepistemology. (shrink)

Realism about the external, natural world is an overarching empirical hypothesis. The method of hypothetical realism rejects as an excessive concession to the skeptic these two assumptions of constructivist intuitionism: first, that everything real must be exhaustively inspectable; and second, that our beliefs are to be justified to the point of certainty. We prefer to say that nothing is ever known directly; that all of our contact with the world is mediated by thoughts, words, and percepts construed as signs having (...) referents distinct from themselves. We organize these signs into meaningful and possibly true hypotheses as we speculate--in practice, science and metaphysics--about a world we have not made. (shrink)

The purpose of this thesis is to provide a metaphysic for moral realism and moral perception. This thesis is in two parts. The first is concerned with basic ontology. I begin in chapter 1 with an analysis of causation, demonstrating that substance theory is superior to Humeanism at accounting for our observations; thus I defend a substance ontology. In chapter 2, I address human agency, demonstrating that reasons internalism does not allow for incompatibilist freedom; hence, I affirm reasons are states (...) of affairs. I move on to qualia in chapter 3, demonstrating that arguments both for and against qualia realism involve question begging. In response, I argue that qualia realism is just as reasonable as anti-realism, and affirm realism. Given this, I address the mind-body problem in chapter 4, demonstrating the failure of physicalists to account for mental causation. I conclude that panpsychism, idealism, and substance dualism are equal reasonable alternatives: each allows for intrinsic properties, which are integral to substance ontology. The second part builds a moral ontology, along with an account of moral perceptual knowledge, compatible with the above basic ontology. In chapter 5, I reject moral properties as monadic since this would bar mapping moral concepts onto mind-independent reality. Instead, I argue that moral properties are relations. More specifically, in chapter 6, I make the case that they are features of relations, relations themselves being the total complex states of affairs between one or more substances. This allows moral properties to have their own nonreducible phenomenal quality. To account for moral normativity, I argue that moral features are actually a class of causal features, and briefly argue that final causes determine the normative causal trajectory of all substances. In chapter 7, I conclude this thesis with addressing possible objections to my theory of perception and perceptual knowledge. (shrink)

A common response to radical skeptical challenges to our knowledge of the external world has been that there are explanatory reasons (e.g., simplicity, coherence, explanatory power, conservatism) for favoring commonsense explanations of our sensory experiences over skeptical explanations. Despite the degree of visibility this class of response has enjoyed, it has often been viewed with skepticism [sic] by the epistemological community because of concerns about the epistemic merits of explanatory reasoning. I argue that skeptical challenges that employ skeptical hypotheses presuppose (...) central explanationist tenets and that this fact should raise one’s estimation of the strength of explanationist responses to skepticism. (shrink)

Many contributors of the debate about knowledge by testimony concentrate on the problem of justification. In my paper I will stress a different point – the concept of testimony itself. As a starting point I will use the definitional proposal of Jennifer Lackey. She holds that the concept of testimony should be regarded as entailing two aspects – one corresponding to the speaker, the other one to the hearer. I will adopt the assumption that we need to deal with both (...) aspects. Nevertheless, I will show that her concept – which suggests regarding testimony as an act of communication conveying information – is too broad and, therefore, I will end up with a different twofold definition. (shrink)

I argue that to know that a proposition is true one must have justification for being certain that the proposition is true. That is, one must have infallible epistemic justification for believing the proposition. It is widely accepted among epistemologists that we rarely, if ever, have such strong justification for our beliefs. It follows that there is precious little that we know. That conclusion is unacceptable to many philosophers. I argue that the positions that lead to the skeptical conclusion are (...) well-motivated and that the skeptical conclusion is implicitly accepted by ordinary speakers. My dissertation has three main components: a metaphilosophical position, an epistemological position, and an error theory. First, the metaphilosophical position. One very important part of philosophy is the analysis of our ordinary concepts. Analysis of our concepts begins with reflecting on what we are inclined to say about various actual and possible cases when considered under specific descriptions. This traditional method has recently come under attack, due in part to the rise of semantic externalism. I agree with externalists that if ‘meaning is reference’ then there is little reason to think reflecting on our concepts from the armchair will provide insight to the nature of the concepts we investigate. I defend a version of semantic internalism which grounds meaning in factors with which subjects are directly acquainted. That view supports the traditional methodology. Furthermore, as the goal of philosophical analysis is to accurately describe concepts of philosophical interest, the only kind of objection that could be decisive against a proposed analysis is that it does not correctly describe our concept. That opens the door to a skeptical analysis of knowledge. Second, the epistemological position. I argue that the unacceptability of sentences of the form “S knows that p but it is possible for S that not-p” is best explained by the hypothesis that our concept of knowledge requires having justification for being certain that what one believes is true. I offer as a criterion of justified certainty the idea that when one knows a proposition is true, one is in a position to decisively answer questions about one’s knowledge of that proposition. I survey a number of competing theories of knowledge and show that they allow for the possibility of knowledge when one fails my criterion of decisive answerability. Those views fail my criterion because according to those views there is nothing the subject is aware of that guarantees for the subject that the allegedly known proposition is true. On that basis, I contend that knowledge is direct awareness of the factors that constitute the truth of the proposition one believes. Third, the error theory. Of course, we rarely have direct awareness of the factors that constitute the truth of the propositions we believe. So, our knowledge attributions are generally false. Yet, they are overwhelmingly natural to make. I argue that competent speakers are often quick to recognize knowledge attributions as a kind of ‘loose talk’ akin to the way we loosely ascribe geometric properties to ordinary objects. We regularly call objects ‘square’ that are not even close to being square, and we are quick to recognize this when challenged. I argue that we do this because we are so accustomed to communicating using strict language to make false claims that we often do not attend to the literal falsity of what we are saying. While we accept very demanding standards for knowledge, the phenomenon of recognizing that our knowledge claims are regularly false is as pervasive as our use of loose speech. (shrink)

This paper argues for extreme rational permissivism—the view that agents with identical evidence can rationally believe contradictory hypotheses—and a mild version of steadfastness. Agents can rationally come to different conclusions on the basis of the same evidence because their way of weighing the theoretic virtues may differ substantially. Nevertheless, in the face of disagreement, agents face considerable pressure to reduce their confidence. Indeed, I argue that agents often ought to reduce their confidence in the higher-order propositions that they know or (...) rationally believe disputed content. I argue, however, that when the subject matter is difficult, there is more flexibility for agents to simultaneously believe that p while withholding belief about whether such belief is rational or known. This allows for modest steadfastness on hard questions in, e.g., philosophy and religion. (shrink)

This dissertation examines some of ways of evaluating beliefs, relevant to epistemology and to metaphysics. Some problems in normative epistemology are solved by properly relating justified belief, rational belief, and knowledge. Chapter 1 uses this strategy to defend externalism about justified belief. Chapters 3 and 4 defend the view that knowledge is the epistemic standard we aim for our beliefs to meet. Chapter 2 investigates which beliefs are improper because formed in an objectionably circular way. The findings support the Moorean (...) response to Brain-In-a-Vat skepticism, by rebutting the objection from ‘easy knowledge’. The theory of justified belief developed in chapter 1 underwrites the Moorean reply. Chapters 5 and 6 make a non-epistemic way of evaluating beliefs central to metaphysics. To understand relativity or vagueness in a subject-matter, we must hold that being true or false is not the metaphysically serious evaluation of how a belief answers to reality. Either verdict on a borderline case is ‘acceptable’ in the metaphysically serious sense. For a matter to be relative is for the ‘acceptability’ of affirming the proposition to vary between judges. Chapters 5 and 6 sketch an approach to metaphysics built from the notion of ‘metaphysically acceptable judgment’, with chapter 6 concentrating on vagueness, and chapter 5 focusing on relativism about knowledge. Chapter 5 argues that the lottery and preface puzzles manifest central features of our concept of knowledge. The proposed version of relativism about knowledge is the only theory to respect those features. The view of knowledge presented in chapter 5 is not an isolated metaphysical extravagance, as the same framework is needed for the right metaphysics of everything that’s vague. It is worth noting that my solution to the lottery puzzle is metaphysical relativism about knowledge, but my rebuttal of Brain-In-a-Vat skepticism concerns epistemic circularity and belongs to normative epistemology. Much recent work incorrectly assumes that the two puzzles receive the same treatment. (shrink)

G.E. Moore’s writings on external world skepticism show us, in broad outline, how to dispense with external world skepticism in a way that is satisfying, intellectually responsible, and yet avoids engaging in constructive epistemological theory-building altogether. His work thus reveals something very important about the relation between epistemology and ordinary life, and also about what it would take to reach a satisfying resolution of certain sorts of perennial philosophical problems.

This dissertation examines Rene Descartes' view of certainty and defends the view that Cartesian certainty is possible. The first half of the dissertation includes an interpretation of Descartes' epistemology as well as an examination of other interpreters' readings. The second half of the dissertation is a defense of the claim that Cartesian certainty of a particular kind is possible; it includes a variety of contemporary objections and replies in defense of the possibility of certainty.