Sinnott-Armstrong has attacked the epistemology of moral intuitionism on the grounds that it is not justified to have some moral beliefs without needing them to be inferred from other beliefs. He believes that our moral judgments are inferentially justified because the “framing effects” which are mostly discussed in the empirical psychology cast doubt on any non-inferential justification. In this paper, I argue that Sinnott-Armstrong’s argument is question begging against intuitionists and his description of epistemological intuitionism is a diluted version (...) that most of intuitionists do not believe, therefore he is not attacking the epistemological intuitionism in its strongest form. I then propose my alternative modest account of epistemological intuitionism. I also reconsider the concept of “non-inferentiality”, as one of the key elements of intuitionist epistemology, and propose a modest account of non-inferentiality. (shrink)

This paper outlines and defends a moderate intuitionism. The point of departure is the intuitionism of W. D. Ross (1930) in The Right and the Good, conceived as ethically pluralist and epistemologically rationalist. The paper articulates a conception of self-evidence – including mediate as well as immediate kinds – appropriate to a moderate intuitionism, explores some of the resources and varieties of that position, and considers some problems and prospects for a rationalist version of intuitionism. The final section addresses the (...) issue of how best to conceive the nature and grounds of prima facie duty, the problem of whether intuitionism can adequately deal with conflicts of prima facie duties, and the question of how satisfactorily a moderate intuitionism can account for the epistemic status of moral judgments of overall duty and their connection with rational action. (shrink)

Attributions of moral knowledge are common in everyday life. We say that we know that some actions are morally right or wrong, permitted or required. Yet, how do we know such moral claims? Moral intuitionism is a family of theories in moral epistemology that tries to answer this question. Intuitionists are not skeptics about moral knowledge. They think that there are moral truths for us to know, and further, that knowledge of these truths is possible. What distinguishes intuitionism from (...) other anti-skeptical moral epistemologies is the idea that we can know some moral truths directly, without inferring them from premises. According to many intuitionists, it is possible for us to know that keeping promises is morally right even if we do not hold this belief on the basis of further evidence or proof. While intuitionism was popular in the early twentieth century, it was since dismissed as implausible. Recently, there has been renewed interest in intuitionism. Philosophers have defended updated versions of the theory and argue that the view has been misunderstood. This chapter considers the merits of intuitionism in moral epistemology. In what follows, I examine different ways of being an intuitionist and indicate the relative strengths and weaknesses of various approaches within intuitionism. (shrink)

This thesis sets out an argument in defence of moral objectivism. It takes Mackie as the critic of objectivism and it ends by proposing that the best defence of objectivism may be found in what I shall call Kantian intuitionism, which brings together elements of the intuitionism of Ross and a Kantian epistemology. The argument is fundamentally transcendental in form and it proceeds by first setting out what we intuitively believe, rejecting the sceptical attacks on those beliefs, and by (...) then proposing a theory that can legitimize what we already do believe. Chapter One sets out our intuitive understanding of morality: that morality is cognitive, moral beliefs can be true or false; that morality is real, we do not construct it; that morality is rational, we can learn about it by rational investigation; and that morality places us under an absolute constraint. The chapter ends by clarifying the nature of that absolute demand and by arguing that the critical idea within morality is the idea of duty. In Chapter Two Mackie’s sceptical attack on objectivism is examined. Four key arguments are identified: that moral beliefs are relative to bfferent agents; that morality is based upon on non-rational causes; that the idea of moral properties or entities is too queer to be sustainable; and that moral objectivism involves queer epistemological commitments. Essentially all of these arguments are shown to be ambiguous; however it is proposed that Mackie has an underlying epistemological and metaphysical theory, scientific empiricism, which is hostile to objectivism and a theory that many find attractive for reasons that are independent of morality. Chapter Three explores the nature of moral rationality and whether scientific empiricism can use the idea of reflective equilibrium to offer a reasonable account of moral rationality. It concludes that, while reflective equilibrium is a useful account of moral rationality, it cannot be effectively reconciled with scientific empiricism. In order to function effectively as a rational process, reflective equilibrium must be rationally constrained by our moral judgements and our moral principles. Chapter Four begins the process of exploring some alternative epistemologies and argues that the only account that remains true to objectivism and the needs of reflective equilibrium is the account of intuitionism proposed by Ross. However this account can be developed further by drawing upon number of Kantian ideas and using them to supplement Ross’s intuitionism. So Chapter Five draws upon a number of Kant's ideas, most notably some key notions from the Critique of Judgement. These ideas are: that we possess a rational will that is subject to the Moral law and determined by practical reason; that we possess a faculty of judgement which enables us to become aware of moral properties and that these two faculties together with the third faculty of thought can function to constitute the moral understanding. Using these ideas the thesis explores whether they can serve to explain how intuitions can be rational and how objectivism can be justified. (shrink)

Covering moral intuition, self-evidence, non-inferentiality, moral emotion and seeming states, Hossein Dabbagh defends the epistemology of moral intuitionism. His line of analysis resists the empirical challenges derived from empirical moral psychology and reveals the seeming-based account of moral intuitionism as the most tenable one. The Moral Epistemology of Intuitionism combines epistemological intuitionism with work in neuroethics to develop an account of the role that moral intuition and emotion play in moral judgment. The book culminates in a convincing argument (...) about the value of understanding moral intuitionism in terms of intellectual seeming and perceptual experience. (shrink)

Essential to moral epistemic intuitionism of the sort proposed by W. D. Ross in the 1930s is the claim that there are self-evident moral propositions that we can be justified in believing solely on the basis of understanding them. Recently, intuitionism in this sense is enjoying something of a renaissance. It is receiving considerable sympathetic attention from such prominent ethicists as Robert Audi, Jonathan Dancy, Brad Hooker, and David McNaughton. ;Of particular interest, I think, is Audi's claim that the most (...) plausible intuitionisms will be what he calls "reflectionist" intuitionisms. By this he means that they will take advantage of what is most plausible in John Rawls's reflective-equilibrium-style moral epistemology, namely, the claim that the extent to which our moral beliefs approach reflective equilibrium---a kind of multi-level integration or coherence---determines, at least in part, how justified we are in holding them. ;In this dissertation I explore the possibility and plausibility of a moral epistemology that is both intuitionist and reflectionist. I develop an objection to Audi's reflectionist intuitionism, and I propose a response in terms of a new account of the relation between intuitive justification and self-evidence. I then consider the implications of this new account concerning whether intuitive justification should be conceived in generalist or particularist, apriorist or aposteriorist, internalist or externalist terms. Finally, I consider whether the resulting sketch of intuitive justification is consistent with any plausible theory of the structure of epistemic justification. In doing so, I say more than has so far been said about the respective roles of both reflectionism and intuitionism in a plausible reflectionist intuitionism. I take the view that the reflectionist intuitionism that emerges from these trials is a new theory built on old foundations which merits consideration in the moral epistemic field. (shrink)

The shape of contemporary ethics owes a great deal to Henry Sidgwick, through his influence on Rawls, Parfit, and others. No one who reads David Phillips’s outstanding book can be left in the slightest doubt about Sidgwick’s continuing significance for both metaethics and normative ethics. Phillips’s scholarship and his substantive arguments are powerful and insightful, and I find them largely persuasive. So in these remarks I intend merely to raise a few questions about each of his four main..

Foundationalism in moral epistemology is a core tenet of ethical intuitionism. According to foundationalism, some moral beliefs can be known without inferential justification; instead, all that is required is a proper understanding of the beliefs in question. In an influential criticism against this view, Walter Sinnott-Armstrong has argued that certain psychological facts undermine the reliability of moral intuitions. He claims that foundationalists would have to show that non-inferentially justified beliefs are not subject to those defeaters, but this would already (...) constitute a form of inference and hence undermine the possibility of noninferential justification. The goal of my paper is to defend foundationalism against Sinnott-Armstrong’s criticism. After presenting his challenge, I first argue that the most promising objection to it fails. This objection makes the case that defeater-defeaters are not part of the justification, but merely preserve the justification which the original claim provides. I object to this argument by distinguishing between weak and robust defeaters; only weak defeaters, I argue, fall outside the scope of justification, and it is an open question whether Sinnott-Armstrong’s defeaters fall into that category. This leads the way to my own criticism of Sinnott-Armstrong’s challenge: foundationalists in moral epistemology are entitled to the use of defeater-defeaters as part of the justification for moral beliefs as long as those defeater-defeaters themselves do not entail moral claims. Therefore, Sinnott-Armstrong’s challenge does not undermine foundationalism. (shrink)

Jonathan Dancy has developed a very refined theory called ethical particularism. He has argued extensively for the metaphysical part of his position. However, the accompanying epistemology is not yet clear. In this paper I will sketch a particularist epistemology that is consistent with Dancy’s particularist metaphysics, although my approach differs in certain respects from epistemological claims Dancy has made. I will defend an epistemology that states: 1. that moral knowledge is based on intuitions and 2. that we (...) need emotions in order to have moral knowledge. I will call this approach ‘affectual intuitionism’. Dancy rejects both claims, but I will argue that his arguments against these claims are not convincing. (shrink)

This book brings together philosophers, mathematicians and logicians to penetrate important problems in the philosophy and foundations of mathematics. In philosophy, one has been concerned with the opposition between constructivism and classical mathematics and the different ontological and epistemological views that are reflected in this opposition. The dominant foundational framework for current mathematics is classical logic and set theory with the axiom of choice (ZFC). This framework is, however, laden with philosophical difficulties. One important alternative foundational programme that is actively (...) pursued today is predicativistic constructivism based on Martin-Löf type theory. Associated philosophical foundations are meaning theories in the tradition of Wittgenstein, Dummett, Prawitz and Martin-Löf. What is the relation between proof-theoretical semantics in the tradition of Gentzen, Prawitz, and Martin-Löf and Wittgensteinian or other accounts of meaning-as-use? What can proof-theoretical analyses tell us about the scope and limits of constructive and predicative mathematics? (shrink)

In this dissertation I discuss the epistemology of ethical intuitionism, in particular the claim that mature moral agents possess self-evident moral knowledge. Traditional intuitionists such as W.D. Ross have claimed that by reflection, we can acquire knowledge of our basic moral duties such as the duty of veracity or benevolence. Recent defenders of intuitionism such as Robert Audi have further developed this theory and argued that adequate understanding can be sufficient for moral knowledge. I criticize this view and argue (...) that such accounts fail to make a convincing case for a foundationalist moral epistemology. Instead, I propose to separate the question of how we acquire moral knowledge from an account that justifies moral beliefs. In response to the first issue, I draw an analogy between our moral intuitions and chosmkian linguistics; in both areas, I argue, human beings possess a universal, unconscious and (partly) inaccessible system of rules that explains how we come to learn language and to make moral judgments. In regards to the justificatory issue, I address recent evolutionary debunking arguments designed to undermine the claim that our moral judgments track stance-independent truths. I try to show that this conclusion only follows under the assumption of an instrumentalist interpretation of moral reasoning which the intuitionist is not forced to accept. (shrink)

In the recent metaethical literature there has been significant interest in the prospects for what I am denoting ‘Perceptual Intuitionism’: the view that normal ethical agents can and do have non-inferential justification for first-order ethical beliefs by having ethical perceptual experiences, e.g., Cullison 2010, McBrayer 2010, Vayrynen 2008. If true, it promises to constitute an independent a posteriori intuitionist epistemology, providing an alternative to intuitionist accounts which posit a priori intuition and/or emotion as sources of non-inferentially justified (...) ethical beliefs. As it is formulated, it is plausible that a necessary con- dition for the view is the truth of Ethical Perception: normal ethical agents can and do have perceptual experiences as of the instantiation of ethical properties. In this paper a sophisticated and promising account of Ethical Perception is offered. Extant objections are shown to fail. However, it will be argued that it is far from obvious that the account of Perceptual Intuitionism which emerges constitutes an independent alternative to other intuitionist accounts. This is because we have reason to think that ethical perceptual experience may be epistemically dependent on other epistemic sources, e.g. a priori intuition or emotion. (shrink)

Constructivist epistemology posits that all truths are knowable. One might ask to what extent constructivism is compatible with naturalized epistemology and knowledge obtained from inference-making using successful scientific theories. If quantum theory correctly describes the structure of the physical world, and if quantum theoretic inferences about which measurement outcomes will be observed with unit probability count as knowledge, we demonstrate that constructivism cannot be upheld. Our derivation is compatible with both intuitionistic and quantum propositional logic. This result is (...) implied by the Frauchiger-Renner theorem, though it is of independent importance as well. (shrink)

According to moral intuitionism, at least some moral seeming states are justification-conferring. The primary defense of this view currently comes from advocates of the standard account, who take the justification-conferring power of a moral seeming to be determined by its phenomenological credentials alone. However, the standard account is vulnerable to a problem. In brief, the standard account implies that moral knowledge is seriously undermined by those commonplace moral disagreements in which both agents have equally good phenomenological credentials supporting their disputed (...) moral beliefs. However, it is implausible to think that commonplace disagreement seriously undermines moral knowledge, and thus it is implausible to think that the standard account of moral intuitionism is true. (shrink)

In this paper, I defend a non-skeptical intuitionist approach to moral epistemology from recent criticisms. Starting with Sinnott-Armstrong's skeptical attacks, I argue that a familiar sort of skeptical argument rests on a problematic conception of the evidential grounds of our moral judgments. The success of his argument turns on whether we conceive of the evidential grounds of our moral judgments as consisting entirely of non-normative considerations. While we cannot avoid skepticism if we accept this conception of our evidential (...) grounds, that's because accepting this conception of our evidential grounds is tantamount to accepting the skeptic's conclusion. We have nothing to fear from arguments for skepticism from skepticism. (shrink)

Ethical Intuitionism was the dominant moral theory in Britain for much of the 18th, 19th and the first third of the twentieth century. However, during the middle decades of the twentieth century ethical intuitionism came to be regarded as utterly untenable. It was thought to be either empty, or metaphysically and epistemologically extravagant, or both. This hostility led to a neglect of the central intuitionist texts, and encouraged the growth of a caricature of intuitionism that could easily be rejected (...) before moving on to 'more serious' philosophical theories. More recently, however, this hostility towards ethical intuitionism has subsided. A wide range of moral philosophers, from Aristotelians, to rule-consequentialists, to expressivists, Kantians and deontologists, are beginning to look to the ethical intuitionists's work as a positive resource. It is, therefore, a good time to get clear on what it was that intuitionists said, and re-evaluate their contribution to our understanding of morality. This volume is the first serious engagement with ethical intuitionism in the light of contemporary developments in ethical theory. It contains essays by eminent moral philosophers working in very different traditions whose aim is to clarify and assess ethical intuitionism. Issues addressed include whether the plurality of basic principles intuitionists adhere to can be grounded in some more fundamental principle; the autonomy of ethics and self-evidence; moral realism and internalism; and the open question argument and naturalism. (shrink)

In this paper I will discuss the main approaches of moral epistemology in the major sects of Islamic theology; the Mu’tazilah and Shi‘ite, who formulated rationalistic ethical system between the eighth and tenth centuries, and the Ash‘arites, who developed a voluntaristic system of morality. At first the answer of Mu’tazila and Shi‘ite to the main question of moral epistemology namely the justification of moral beliefs will be discussed and compared with the intuitionism of Western ethics. Secondly the voluntarism (...) of Ash‘arite concerning the moral knowledge will be discussed and rejected. (shrink)

The aims of this paper are twofold: firstly, to say something about that philosophy of mathematics known as 'intuitionism' and, secondly, to fit these remarks into a more general message for the philosophy of mathematics as a whole. What I have to say on the first score can, without too much inaccuracy, be compressed into two theses. The first is that the intuitionistic critique of classical mathematics can be seen as based primarily on epistemological rather than on meaning-theoretic considerations. The (...) second is that the intuitionist's chief objection to the classical mathematician's use of logic does not center on the use of particular logical principles (in particular, the law of excluded middle and its ilk). Rather on the role the classical mathematician assigns (or at least extends) generally (i.e. regardless of the particular principles used) to the use of logic in the production mathematical proofs. Thus, the intuitionist critique of logic that we shall be presenting is far more radical than that which has commonly been presented. -/- Concerning the second, more general, theme, my claim is this: some restriction of the role of logical inference in mathematical proof such as that mentioned above is necessary if one is to account for the seeming difference in the epistemic conditions of provers whose reasoning is based on genuine insight into the subject-matter being investigated, and would-be provers whose reasoning is based not on such insight, but rather on principles of inference which hold of every subject-matter indifferently. (shrink)

In recent years there has been a resurgence of interest in Ethical Intuitionism, whose core claim is that normal ethical agents can and do have non-inferentially justified first-order ethical beliefs. Although this is the standard formulation, there are two senses in which it is importantly incomplete. Firstly, ethical intuitionism claims that there are non-inferentially justified ethical beliefs, but there is a worrying lack of consensus in the ethical literature as to what non-inferentially justified belief is. Secondly, it has been overlooked (...) that there are plausibly different types of non-inferential justification, and that accounting for the existence of a specific sort of non-inferential justification is crucial for any adequate ethical intuitionist epistemology. In this context, it is the purpose of this paper to provide an account of non- inferentially justified belief which is superior to extant accounts, and, to give a refined statement of the core claim of ethical intuitionism which focuses on the type of non- inferential justification vital for a plausible intuitionist epistemology. Finally, it will be shown that the clarifications made in this paper make it far from obvious that two intuitionist accounts, which have received much recent attention, make good on intuitionism’s core claim. (shrink)

In this essay I defend the view that Henry Sidgwick’s moral epistemology is a form of intuitionist foundationalism that grants common-sense morality no evidentiary role. In §1, I outline both the problematic of The Methods of Ethics and the main elements of its argument for utilitarianism. In §§2-4 I provide my interpretation of Sidgwick’s moral epistemology. In §§ 5-8 I refute rival interpretations, including the Rawlsian view that Sidgwick endorses some version of reflective equilibrium and the view (...) that he is committed to some kind of pluralistic epistemology. In§ 9 I contend with some remaining objections to my view. (shrink)

Since the 2004 publication of his book The Good in the Right, Robert Audi has been at the forefront of the current resurgence of interest in intuitionism – the idea that human beings have an intuitive sense of right and wrong – in ethics. The New Intuitionism brings together some of the world’s most important contemporary writers from such diverse fields as metaethics, epistemology and moral psychology to explore the latest implications of, and challenges to, Audi’s work. The book (...) also includes an opening chapter that surveys the development of contemporary intuitionism and a conclusion that lays the ground for future developments and debates both written by Audi himself, making this an essential survey of this important school of ethical thought for anyone working in the field. (shrink)

How ought we to go about forming and revising our beliefs, arguing and debating our reasons, and investigating our world? If those questions constitute normative epistemology, then I am interested here in normative metaepistemology: the investigation into how we ought to go about forming and revising our beliefs about how we ought to go about forming and revising our beliefs -- how we ought to argue about how we ought to argue. Such investigations have become urgent of late, for (...) the methodology of epistemology has reached something of a crisis. For analytic epistemology of the last half-century has relied overwhelmingly on intuitions,1 and a growing set of arguments and data has begun to call this reliance on intuition seriously into question (e.g., Weinberg, Nichols, and Stich 2001; Nichols, Stich, and Weinberg 2003; Cummins 1998). Although that method has not been entirely without defenders (BonJour 1998; Bealer 1996; Jackson 1998; Sosa forthcoming; Weatherson 2003), these defenses have not generally risen to the specific challenges leveled by the anti-intuitionist critics. In particular, the critics have attacked specific ways of deploying intuitions, and the defenders have overwhelmingly responded with in-principle defenses of the cogency of appealing to intuition. An analogy here would be someone’s responding to arguments alleging systematic.. (shrink)

I define ethical intuitionism as the view that it is appropriate to appeal to inferentially unsupported moral beliefs in the course of moral reasoning. I mention four common objections to this view, including the view that all such appeals to intuition make ethical theory politically and noetically conservative. I defend intuitionism from versions of this criticism expressed by R.B. Brandt, R.M. Hare and Richard Miller.

Elizabeth Anscombe is well-known for her insistence that there are absolutely prohibited actions, though she is somewhat obscure about why this is so. Nonetheless, I contend in this paper that Anscombe is more concerned with the epistemology of absolute prohibitions, and that her thought on connatural moral knowledge - which resembles moral intuition - is key to understanding her thought on moral prohibitions. I shall identify key features of Anscombe's moral epistemology before turning to investigate its sources, examining (...) the roots of connaturality in Aquinas and comparing it with rationalist ethical intuitionism, which Anscombe differs from in rejecting "good" as a simple, non-natural property. I then develop a two-stage argument about absolute prohibition: The first will be loosely Thomistic, while the second will suggest how Anscombe's absolute prohibitions can be seen as a continuation of Wittgenstein's anti-scepticism in On Certainty. I develop an account of absolute prohibitions as a form of Wittgensteinian hinge proposition - they are not the conclusions of deductive arguments, but the foundations for intelligibility in action. (shrink)

How ought we to go about forming and revising our beliefs, arguing and debating our reasons, and investigating our world? If those questions constitute normative epistemology, then I am interested here in normative metaepistemology: the investigation into how we ought to go about forming and revising our beliefs about how we ought to go about forming and revising our beliefs -- how we ought to argue about how we ought to argue. Such investigations have become urgent of late, for (...) the methodology of epistemology has reached something of a crisis. For analytic epistemology of the last half-century has relied overwhelmingly on intuitions,1 and a growing set of arguments and data has begun to call this reliance on intuition seriously into question (e.g., Weinberg, Nichols, and Stich 2001; Nichols, Stich, and Weinberg 2003; Cummins 1998). Although that method has not been entirely without defenders (BonJour 1998; Bealer 1996; Jackson 1998; Sosa forthcoming; Weatherson 2003), these defenses have not generally risen to the specific challenges leveled by the anti-intuitionist critics. In particular, the critics have attacked specific ways of deploying intuitions, and the defenders have overwhelmingly responded with in-principle defenses of the cogency of appealing to intuition. An analogy here would be someone’s responding to arguments alleging systematic.. (shrink)

Ethical intuitionists regard moral knowledge as deriving from moral intuition, moral observation, moral emotion and inference. However, moral intuitions, observations and emotions are cultural artefacts which often differ starkly between cultures. Intuitionists attribute uncongenial moral intuitions, observations or emotions to bias or to intellectual or moral failings; but that leads to sectarian ad hominen attacks. Intuitionists try to avoid that by restricting epistemically genuine intuitions, observations or emotions to those which are widely agreed. That does not avoid the problem. It (...) also limits epistemically genuine intuitions, observations or emotions to those with meagre content, and the intuitionists offer no plausible explanation for how inference from such insubstantial propositions can engender substantial moral knowledge. Instead of moral knowledge, intuitionism offers the prospect of mutual name-calling between intellectually stagnant groups. I criticise and reject the principle of phenomenal conservatism, to which intuitionists sometimes appeal. (shrink)

According to pluralistic intuitionist theories, some of our moral beliefs are non-inferentially justified, and these beliefs come in both an a priori and an a posteriori variety. In this paper I present new support for this pluralistic form of intuitionism by examining the deeply social nature of moral inquiry. This is something that intuitionists have tended to neglect. It does play an important role in an intuitionist theory offered by Bengson, Cuneo, and Shafer-Landau (forth), but whilst they invoke (...) the social nature of moral inquiry in order to argue that ordinary moral intuitions are trustworthy, my argument focuses on what I will call the ‘frontiers’ of moral inquiry. I will show that inclusive and cooperative dialogue is necessary at moral inquiry’s frontiers, and that intuitionists can expect such dialogue to result in both a priori and a posteriori moral beliefs. (shrink)

Sensibility theorists such as John McDowell have argued that once we appreciate certain similarities between moral values and secondary qualities, a new meta-ethical position might emerge, one that avoids the alleged difficulties with moral intuitionism and non-cognitivism. The aim of this paper is to examine the meta-ethical prospects of this secondary-quality analogy. Of particular concern will be the extent to which McDowell’s comparison of values to secondary qualities supports a viewpoint unique from that of the moral intuitionist. Once we (...) disentangle the various metaphysical and epistemological strands of McDowell’s analogy, McDowell’s position might appear closer to moral intuitionism than initially supposed. This discussion will also help clarify the intended meaning of the secondary-quality analogy, as well as its significance for ethics more generally. (shrink)

The aim of this paper is to establish a phenomenological mathematical intuitionism that is based on fundamental phenomenological-epistemological principles. According to this intuitionism, mathematical intuitions are sui generis mental states, namely experiences that exhibit a distinctive phenomenal character. The focus is on two questions: what does it mean to undergo a mathematical intuition and what role do mathematical intuitions play in mathematical reasoning? While I crucially draw on Husserlian principles and adopt ideas we find in phenomenologically minded mathematicians such as (...) Hermann Weyl and Kurt Gödel, the overall objective is systematic in nature: to offer a plausible approach towards mathematics. (shrink)

Walter Sinnott-Armstrong has developed and progressively refined an argument against moral intuitionism—the view on which some moral beliefs enjoy non-inferential justification. He has stated his argument in a few different forms, but the basic idea is straightforward. To start with, Sinnott-Armstrong highlights facts relevant to the truth of moral beliefs: such beliefs are sometimes biased, influenced by various irrelevant factors, and often subject to disagreement. Given these facts, Sinnott-Armstrong infers that many moral beliefs are false. What then shall we think (...) of our own moral beliefs? Either we have reason to think some of our moral beliefs are reliably formed or we have no such reason. If the latter, our moral beliefs are unjustified. If we have reason to think some moral beliefs are reliably formed, then those beliefs are not non-inferentially justified, because then we’ll have reason to accept something—namely, that they are reliably formed—that entails or supports those beliefs. But then, either way, our moral beliefs are not non-inferentially justified, and so moral intuitionism is false. This paper takes issue with Sinnott-Armstrong’s interesting and widely discussed argument, which we here call the Empirical Defeat Argument (EDA). According to us, the EDA does not defeat moral intuitionism. In section 1, we will set out the argument, briefly reviewing the rationale Sinnott-Armstrong offers for the premises. Then, in section 2, we identify a critical but dubious epistemological assumption concerning the nature of defeat that undergirds the argument. Finally, in section 3, we will defend our challenge to the EDA by answering two objections. (shrink)

Over the last decade there have been various attempts to use empirical data about people’s dispositions to choose to undermine various moral positions by arguing that our judgements about what to do are unreliable. Usually they are directed at non-consequentialists by consequentialists, but they have also been directed at all moral theories by skeptics about morality. Walter Sinnott-Armstrong has been one of the leading proponents of such general skepticism. He has argued that empirical results particularly undermine intuitionist moral (...) class='Hi'>epistemology. This paper is an attempt to look at what intuitionists should say in response. Consider the following argument : Regress (R1) If any person S is ever justified in believing a normative claim that p then S must be able to infer p from other beliefs of S. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Philosophy 39.3 (2001) 407-436 [Access article in PDF] Dilthey's Epistemology of the Geisteswissenschaften: Between Lebensphilosophie and Wissenschaftstheorie James Reid A great part of my life's work has been devoted to formulating a universally valid science which should provide the human sciences with a firm foundation and a unified internal coherency.... I am neither an intuitionist, nor a historicist, nor a skeptic. Dilthey (...) to Husserl, 29 June 1911 To show life as it is, that is what we strive for. To describe life: that is our goal.... We want to make life visible in its unfathomable depths, and in its unfathomable nexus. Dilthey, Gesammelte Schriften 19: 330 In the dedication of the first volume of the Einleitung in die Geisteswissenschaften to his friend and philosophical interlocutor Count Yorck, Dilthey famously named what would become his lifelong philosophical preoccupation a Kritik der historischen Vernunft, the overarching aim of which is to provide "an epistemological foundation for the human sciences" that would "determine the interconnections among the particular human sciences, the limits within which knowledge is possible in these sciences, and the relation of their truths to one another." 1 For Dilthey, the liberation of historical consciousness from the "grey cobweb of abstract essences" spun by traditional metaphysics constituted one of the [End Page 407] major intellectual achievements of the nineteenth century. 2 However, as important as the concrete historical investigations of Ranke, Droysen, and Mommsen undoubtedly are, the Historical School nevertheless failed in Dilthey's eyes to grasp the essence of historical consciousness—its scope, limits and objective validity: Its study and evaluation of historical phenomena remain unconnected with the analysis of facts of consciousness; consequently, it has no grounding in the only knowledge which is ultimately secure; it has in short no philosophical foundation. 3A critique of historical reason, grasped as an epistemological analysis of "the capacity of man to know himself and the society and history which he has produced," is needed in order to provide for the Geisteswissenschaften a foundation equivalent to the one furnished by Kant for mathematical natural science in the Kritik der reinen Vernunft. 4The epistemological dimension of Dilthey's project took shape as the elaboration of a basic science (Grundwissenschaft) identified, in the Einleitung at least, with descriptive psychology. 5 In an effort to delimit the province of the Geisteswissenschaften, Dilthey came to distinguish between outer experience and its objects and various levels of inner experience. Although Dilthey's thought developed considerably in the years after 1900, most notably in the direction [End Page 408] of a refinement of the relation between inner and outer experience, the distinction between these two fundamental modes of givenness remained central to his conception of the structure and methodology of the human sciences. 6 In a number of manuscripts, some published in Dilthey's lifetime, others (by far the majority) published after his death by former students, Dilthey envisages a comprehensive theory of consciousness and its objectifications that would shed light on the origins and ultimate validity of our knowledge of the historical world.As several commentators have pointed out, however, the epistemological dimension of Dilthey's project fails to capture the entire breadth of his achievement. 7 Dilthey's interest in the objective validity of historical investigation was subservient to broader concerns about the nature of human existence and its historicity, what Dilthey often referred to simply as Leben. 8 Life as it is revealed in the human sciences is the medium in which self-consciousness and self-knowledge, scientific and practical activity originate, and remains the abiding concern of the human sciences. At the most fundamental level of epistemological reflection, we encounter life as it is lived in pre-scientific and pre-reflective experience (Erlebnis). 9 Life, Dilthey consistently maintained, is the "prius" of thought: Knowledge (Erkenntnis) cannot go behind life, of which it is a function. Life always remains the presupposition of knowledge, i.e., of the consciousness or knowledge (Wissen) contained in life. As a presupposition of knowledge (des Erkennens) itself, life is [End... (shrink)

After sketching the essentials of L. E. J. Brouwer’s intuitionistic mathematics—separable mathematics, choice sequences, the uniform continuity theorem, and the intuitionistic continuum—this chapter outlines the main philosophical tenets that go hand in hand with Brouwer’s technical achievements. It presents his views about general and mathematical phenomenology and shows how these views ground his positive epistemological and ontological positions and his stinging criticisms of classical mathematics and logic. The chapter then turns to intuitionistic logic and its philosophical side. It first sets (...) out the basic meta-logical technical results, then discusses the relevant philosophical views—those of Arend Heyting and Michael Dummett. It concludes by tracing intuitionism’s philosophical and technical roots in Aristotle and Kant. (shrink)

Psychologism is a philosophical ideology that seeks to explain the principles of logic, metaphysics, and epistemology as psychological phenomena. Psychologism has been the storm center of concerted criticisms since the nineteenth century, and is thought by many to have been refuted once and for all by Kant, Frege, Husserl, and others. The project of accounting for objective philosophical or mathematical truths in terms of subjective psychological states has been largely discredited in mainstream analytic thought. Ironically, psychologism has resurfaced in (...) unexpected guises in the form of intuitionistic logic and mathematics, cognitivism, and naturalized epistemology. I examine some of the principal objections to psychologism – distinguishing roughly between good and bad or philosophically acceptable versus unacceptable psychologism – and consider the extent to which a new wave of psychologism may be gaining prominence in contemporary philosophy, and the light its successes and failures may shed on the original concept and underlying perspective of classical psychologism. (shrink)

In the present day and age, it seems that every constructivist philosopher of mathematics and her brother wants to be known as an intuitionist. In this paper, It will be shown that such a self-identification is in most cases mistaken. For one thing, not any old (or new) constructivism is intuitionism because not any old relevant construction is carried out mentally in intuition, as Brouwer envisaged. (edited).

A key question in the philosophy of logic is how we have epistemic justification for claims about logical entailment (assuming we have such justification at all). Justification holism asserts that claims of logical entailment can only be justified in the context of an entire logical theory, e.g., classical, intuitionistic, paraconsistent, paracomplete etc. According to holism, claims of logical entailment cannot be atomistically justified as isolated statements, independently of theory choice. At present there is a developing interest in—and endorsement of—justification holism (...) due to the revival of an abductivist approach to the epistemology of logic. This paper presents an argument against holism by establishing a foundational entailment-sentence of deduction which is justified independently of theory choice and outside the context of a whole logical theory. (shrink)

I discuss the ideas of common sense and common-sense morality in Sidgwick. I argue that, far from aiming at overcoming common-sense morality, Sidgwick aimed purposely at grounding a consist code of morality by methods allegedly taken from the natural sciences, in order to reach also in the domain of morality the same kind of “mature” knowledge as in the natural sciences. His whole polemics with intuitionism was vitiated by the apriori assumption that the widespread ethos of the educated part of (...) humankind, not the theories of the intuitionist philosophers, was what was really worth considering as the expression of intuitionist ethics. In spite of the naïve positivist starting point Sidgwick was encouraged by his own approach in exploring the fruitfulness of coherentist methods for normative ethics. Thus, Sidgwick left an ambivalent legacy to twentieth-century ethics: the dogmatic idea of a “new” morality of a consequentialist kind, and the fruitful idea that we can argue rationally in normative ethics albeit without shared foundations. -/- . (shrink)

Robert Audi's ethical intuitionism (Audi, 1997, 1998) deals effectively with standard epistemological problems facing the intuitionist. This is primarily because the notion of self-evidence employed by Audi commits to very little. Importantly, according to Audi we might understand a self-evident moral proposition and yet not believe it, and we might accept a self-evident proposition because it is self-evident, and yet fail to see that it is self-evident. I argue that these and similar features give rise to certain challenges to (...) Audi's intuitionism. It becomes harder to argue that there are any self-evident propositions at all, or more than just a few such propositions. It is questionable whether all moral propositions that we take an interest in are evidentially connected to self-evident propositions. It is difficult to understand what could guide the sort conceptual revision that is likely to take place in our moral theorising. It is hard to account for the epistemic value of the sort of systematicity usually praised in moral theorising. Finally, it is difficult to see what difference the truth of Audi's ethical intuitionism would make to the way in which we (fail to) handle moral disagreement. (shrink)

In this paper, we try to confront Robert Audis moral epistemology, namely his intuitionism, based on the concept of a self-evident moral proposition, with two main problems: disagreement and dogmatism within moral discourse. Although Audi can meet those classical objections in his theory, we think that some problems remain. We proceed – after an introduction – in five sections in order to pursue this end. After a short introductory section, we first reconstruct the classical intuitionist moral epistemology. (...) We then discuss the dogmatism and the disagreement objection and, in doing so, introduce Audi’s own version of a moral epistemology. After having proposed that the disagreement objection concerns an explanatory problem, we discuss a second version, namely disagreement as a problem of rationality. In the fourth section we present a third version, disagreement as a problem of moral discourse, understood as an intersubjective enterprise. In the fifth section we propose a solution to disagreement situations of this kind. (shrink)

Genevieve Lloyd’s Spinoza is quite a different thinker from the arch rationalist caricature of some undergraduate philosophy courses devoted to “The Continental Rationalists”. Lloyd’s Spinoza does not see reason as a complete source of knowledge, nor is deductive rational thought productive of the highest grade of knowledge. Instead, that honour goes to a third kind of knowledge—intuitive knowledge (scientia intuitiva), which provides an immediate, non-discursive knowledge of its singular object. To the embarrassment of some hard-nosed philosophers, intellectual intuition has an (...) affective component; it is a form of love, and ultimately given that human beings are finite modes of God/Nature (Deus sive Natura), it is a form of the intellectual love of God (amor Dei intellectualis). Some philosophers do not know what to make of this mysterious aspect of Spinoza’s philosophy, which is nonetheless firmly anchored in a reading of Part V of the Ethics. Nonetheless, this note will insist with Lloyd’s “Reconsidering Spinoza’s Rationalism” that such doctrine is an integral part of Spinoza’s philosophy. Moreover, it will be shown that Spinoza is well aware of the limitations of reason (ratio) in gaining scientific knowledge of the world and requires intuition precisely because of the inability of reason to represent individuals in their full particularity. Imagination too has a role to play in shaping scientific knowledge, although reason performs a vital critical role in disciplining and liberating the human mind from inadequate imaginary ideas. The result is an interpretation of Spinoza’s epistemology as both rationalist and intuitionist. DOI: 10.1080/24740500.2021.1962652. (shrink)

When in 1950, the distinguished psychologist, Jean Piaget, published a book on the relation of logic and psychology, the book was severely criticized in the journal Methodos by the logician E. V. Beth. Piaget asked to get together with Beth to discuss the issues involved. The result, over 15 years later, is the present book. Beth is the author of the first half in which he defends the complete autonomy of logic in relation to psychology by means of a partly (...) philosophical, partly historical treatment of logicist, formalist, and intuitionist philosophies of mathematics. Briefly put, Beth's thesis is the now familiar one in contemporary philosophy that logic and mathematics are normative sciences, psychology is a factual science. As a consequence, Beth argues that we must renounce all "psychologism" in logic and mathematics, and all "logicism" in psychology. Piaget has come to accept these main contentions of Beth and affirms them in the second half of the volume. But Piaget is impressed by the fact that a good deal of human conceptual development must go on before human beings recognize and state normative laws of logical thought. Piaget attempts to chart this conceptual development and explain how it takes place. He attempts to show that this genetic-psychological approach to the study of logical and mathematical thought is complementary to and fully compatible with the deductive approach of the formal logician, and hence compatible with Beth's thesis about the conceptual autonomy of logic and psychology. Logician and psychologist can thus deal with the same material although their approaches are conceptually autonomous. The book repays careful reading not only for the arguments defending these challenging claims but also for many other details in both parts.--R. H. K. (shrink)

We introduce reactive Kripke models for intuitionistic logic and show that the reactive semantics is stronger than the ordinary semantics. We develop Beth tableaux for the reactive semantics.

Ethical intuitionism is the theory of cognition of moral facts and, what’s closely related, a theory that explores the meaning of moral judgments. I’ve been a proponent of this theory discussing it in some of my writing, most notably in Sens i prawda w etyce [Sense and Truth in Ethics], published as a 49th volume in the ”Biblioteka Myśli Semiotycznej” series. Part I of this paper addresses criticisms that Anna Jedynak raised in her review of my book. In part II, (...) I will discuss a theory of moral behaviour proposed by Bogusław Wolniewicz in two of his articles. I consider the idea of moral cognition following from his conception and contrast it with the notion of moral cognition and moral meaning that follow from ethical intuitionism. I hope that the following discussion will help clarify and explain the main ideas behind ethical intuitionism considered as an epistemological and semiotic theory, however problematic it may appear to be. (shrink)

We construct an extension P of the standard language of classical propositional logic by adjoining to the alphabet of a new category of logical-pragmatic signs. The well formed formulas of are calledradical formulas (rfs) of P;rfs preceded by theassertion sign constituteelementary assertive formulas of P, which can be connected together by means of thepragmatic connectives N, K, A, C, E, so as to obtain the set of all theassertive formulas (afs). Everyrf of P is endowed with atruth value defined classically, (...) and everyaf is endowed with ajustification value, defined in terms of the intuitive notion of proof and depending on the truth values of its radical subformulas. In this framework, we define the notion ofpragmatic validity in P and yield a list of criteria of pragmatic validity which hold under the assumption that only classical metalinguistic procedures of proof be accepted. We translate the classical propositional calculus (CPC) and the intuitionistic propositional calculus (IPC) into the assertive part of P and show that this translation allows us to interpret Intuitionistic Logic as an axiomatic theory of the constructive proof concept rather than an alternative to Classical Logic. Finally, we show that our framework provides a suitable background for discussing classical problems in the philosophy of logic. (shrink)

The most puzzling and intriguing aspect of intuitionism as a philosophy of mathematics is its claim that classical deductive reasoning in mathematics is illegitimate. The two most well-known proponents of this position are L. E. J. Brouwer and Michael Dummett. Both of their criticisms of the use of classical logic in mathematics have, by and large, been taken to depend on the thesis that the principle of bivalence does not apply to mathematical statements; and the difference between these criticisms is (...) taken to consist in their grounds for this thesis. Brouwer bases this thesis on an account of the nature of mathematics: it is an activity of mental construction essentially independent of language. Dummett, in contrast, bases the thesis on his anti-realist view of the nature of meaning. ;My first principal argument in this essay shows that the conception of anti-realism just outlined is problematic as a reading of Dummett. To begin with, Dummett explicitly rejects, not only the evidentiary restrictions of this conception, but also, more seriously, the use of specific epistemological theses in a philosophical account of meaning. Moreover, I give an alternative account of anti-realism, consisting of alternative interpretations of the manifestation requirement and of the rejection of realist truth conditions, that do not rely on an epistemology of meaning, and hence, a fortiori, not on evidential restrictions. ;My second principal argument in this essay consists of drawing a consequence of this conception of anti-realism, namely, that the failure of bivalence cannot, by itself, support a cogent criticism of classical logic. The basic reason is that, given my view of anti-realism, the claim that the legitimacy of applying classical reasoning to a class of statements depends on whether bivalence applies to that class already implies that the system of deductive reasoning applying to these statements is non-classical. Hence an argument against classical logic based on this claim is question-begging. ;Finally, I conclude by showing that Dummett's criticism of classical reasoning, as reconstructed by my third argument, fails. (shrink)

According to a posteriori ethical intuitionism, perceptual experiences can provide non-inferential justification for at least some moral beliefs. Moral epistemology, for the defender of AEI, is less like the epistemology of math and more like the epistemology of tables and chairs. One serious threat to AEI comes from the phenomenon of cognitive penetration. The worry is that even if evaluative properties could figure in the contents of experience, they would only be able to do so if prior (...) cognitive states influence perceptual experience. Such influences would undermine the non-inferential, foundationalist credentials of AEI. In this paper, I defend AEI against this objection. Rather than deny that cognitive penetration exists, I argue that some types of cognitive penetrability are actually compatible with AEI's foundationalist structure. This involves teasing apart the question of whether some particular perceptual process has justification-conferring features from the question of how it came to have those features in the first place. Once this distinction is made, it becomes clear that some kinds of cognitive penetration are compatible with the non-inferential status of moral perceptual experiences as the proponent of AEI claims. (shrink)

One of the liveliest areas in moral psychology in recent years has been research on the extent to which conscious reasoning leads to the formation of moral judgments. The goal of this chapter is to review and briefly assess three of the leading positions today on this topic - traditional rationalism, social intuitionism, and morphological rationalism - each of which has significant implications for moral epistemology.