Metaphysical rationalism, the doctrine which affirms the Principle of Sufficient Reason (the PSR), is out of favor today. The best argument against it is that it appears to lead to necessitarianism, the claim that all truths are necessarily true. Whatever the intuitive appeal of the PSR, the intuitive appeal of the claim that things could have been otherwise is greater. This problem did not go unnoticed by the great metaphysical rationalists Spinoza and Leibniz. Spinoza’s response was to embrace necessitarianism. (...) Leibniz’s response was to argue that, despite appearances, rationalism does not lead to necessitarianism. This paper examines the debate between these two rationalists and concludes that Leibniz has persuasive grounds for his opinion. This has significant implications both for the plausibility of the PSR and for our understanding of modality. (shrink)

I draw on neurobiological evidence to defend the rationalist thesis that moral judgments are essentially dependent on reasoning, not emotions (conceived as distinct from inference). The neuroscience reveals that moral cognition arises from domain-general capacities in the brain for inferring, in particular, the consequences of an agent’s action, the agent’s intent, and the rules or norms relevant to the context. Although these capacities entangle inference and affect, blurring the reason/emotion dichotomy doesn’t preferentially support sentimentalism. The argument requires careful consideration of (...) the empirical evidence (from neuroimaging to psychopathology) and philosophical analysis of the commitments of rationalism versus sentimentalism in ethics. (shrink)

Debunking arguments typically attempt to show that a set of beliefs or other intensional mental states bear no appropriate explanatory connection to the facts they purport to be about. That is, a debunking argument will attempt to show that beliefs about p are not held because of the facts about p. Such beliefs, if true, would then only be accidentally so. Thus, their causal origins constitute an undermining defeater. Debunking arguments arise in various philosophical domains, targeting beliefs about morality, the (...) existence of God, logic, and others. They have also arisen in material-object metaphysics, often aimed at debunking common-sense ontology. And while most of these arguments feature appeals to ‘biological and cultural contingencies’ that are ostensibly responsible for our beliefs about which kinds of objects exist, few of them take a serious look at what those contingencies might actually be. The purpose of this paper is twofold. First, to remedy this by providing empirical substantiation for a key premise in these debunking arguments by examining data from cognitive science, evolutionary biology, and developmental psychology that support a ‘debunking explanation’ of our common-sense beliefs and intuitions about which objects exist. Second, to argue that such data also undermines a particular kind of rationalist defense of common-sense ontology, sometimes employed as a response to the debunking threat. (shrink)

Material from this paper appears in Chap. 7 of my book Reason and Being, but there is also stuff here that isn't in the book. In particular, it discusses the claims that, for Spinoza, conceiving implies explaining and that existence is identical to or reducible to conceivability. So, if you're interested in those issues, this paper might be worth a read.

It is commonly held that our intuitive judgements about imaginary problem cases are justified a priori, if and when they are justified at all. In this paper I defend this view — ‘rationalism’ — against a recent objection by Timothy Williamson. I argue that his objection fails on multiple grounds, but the reasons why it fails are instructive. Williamson argues from a claim about the semantics of intuitive judgements, to a claim about their psychological underpinnings, to the denial of (...) rationalism. I argue that the psychological claim — that a capacity for mental simulation explains our intuitive judgements — does not, even if true, provide reasons to reject rationalism. (More generally, a simulation hypothesis, about any category of judgements, is very limited in its epistemological implications: it is pitched at a level of explanation that is insensitive to central epistemic distinctions.) I also argue that Williamson’s semantic claim — that intuitive judgements are judgements of counterfactuals — is mistaken; rather, I propose, they are a certain kind of metaphysical possibility judgement. Several other competing proposals are also examined and criticized. (shrink)

The aim of this paper is to consider whether critical rationalism has any ideas which could usefully be applied to the internet. Today we tend to take the internet for granted and it is easy to forget that it was only about two decades ago that it began to be used to any significant extent. Accordingly in section 1 of the paper, there is a brief consideration of the history of the internet. At first sight this makes it looks (...) implausible that any of Popper’s ideas could be applicable to the internet, since Popper died before the internet came into general use. However, section 2 argues that Popper’s theory of World 3 does apply very well to the internet. This application is significant because, as shown in section 3, it leads to the problem of misinformation, which is one of the most significant problems generated by the internet. In section 4 there is an attempt to solve this problem using ideas taken from Popper’s epistemology. It is argued that there should be changes in education designed to prepare students for the internet age. Teaching in the internet age should focus on presenting to the students not just the accepted theories but also the evidence on which they are based. An illustration of how this might be done is given by considering an example from science teaching, namely the teaching of Newtonian mechanics in the last years of school or first years of university. (shrink)

‘Post-truth’ has become a buzzword for numerous current crises: the fragmentation of the media landscape, the ongoing debate about ‘fake news’, the loss of trust in science, etc. Although these crises take place in society, it is claimed that the roots of post-truth can be traced back to the history of philosophy. Occasionally, it is asserted that Karl Popper’s critical rationalism gave rise to post-truth: His rejection of verificationism has limited truth claims in the realm of science. Given the (...) absence of infallible evidence and certainty, critical rationalism calls for challenging scientific authority. I argue that post-truth is compatible with critical rationalism from an epistemological point of view, considering that both positions are critical of certainty. However, in critical rationalism, fallibilism, responsibility, and the idea of criticism are combined, and in this respect, it offers a possible way to overcome the problems that are associated with post-truth. This treatment of the problems of post-truth results from the recognition of moral responsibility to take action on the basis of a hypothesis that remains open to revision. (shrink)

Moral Rationalism is the view that if an act is morally required then it is what there is most reason to do. It is often assumed that the truth of Moral Rationalism is dependent on some version of The Overridingness Thesis, the view that moral reasons override nonmoral reasons. However, as Douglas Portmore has pointed out, the two can come apart; we can accept Moral Rationalism without accepting any version of The Overridingness Thesis. Nevertheless, The Overridingness Thesis (...) serves as one of two possible explanations for Moral Rationalism. In this paper I will investigate which of these two explanations a moral rationalist should accept. I will argue that when we properly attend to the form of Moral Rationalism supported by the intuitions that motivate the view, we are left with no reason to accept The Overridingness Thesis. (shrink)

This chapter introduces the rationalist model of delusions. It begins by presenting John Campbell’s seminal proposal that delusions are caused top-down by pathological Wittgensteinian framework or hinge beliefs. After presenting Campbell’s rationalist account of delusions, the chapter raises and examines prominent objections by Tim Bayne & Elisabeth Pacherie as well as by Tim Thornton. The former make an important distinction between the aetiological top-down cognitive part and the epistemological rationalist framework part of Campbell’s account. The thesis that delusions are caused (...) top-down by pathological beliefs is not equivalent to the thesis that delusions are Wittgensteinian framework certainties. This chapter endorses this distinction. While the arguments against the top-down aspect are found to be more convincing – which motivates popular two-factor theories – the rationalist framework model of delusions is defended as an epistemologically promising account of delusion. Finally, this chapter examines a range of developments that have been made taking Campbell’s rationalism as a starting point. Most prominently the section examines Eilan’s early development of rationalism and Rhodes and Gipps’ proposal that delusions are not framework propositions but a product of their absence. (shrink)

Thirty years after the rise of the evidence-based medicine (EBM) movement, formal training in philosophy remains poorly represented among medical students and their educators. In this paper, I argue that EBM’s reception in this context has resulted in a privileging of empiricism over rationalism in clinical reasoning with unintended consequences for medical practice. After a limited review of the history of medical epistemology, I argue that a solution to this problem can be found in the method of the 2nd-century (...) Roman physician Galen, who brought empiricism and rationalism together in a synthesis anticipating the scientific method. Next, I review several of the problems that have been identified as resulting from a staunch commitment to empiricism in medical practice. Finally, I conclude that greater epistemological awareness in the medical community would precipitate a Galenic shift toward a more epistemically balanced, scientific approach to clinical research. (shrink)

The article argues against attempts to combine ontological realism about modality with the rejection of modal rationalism and it suggests that modal realism requires modal rationalism. /// El artículo da argumentos en contra de que se intente combinar el realismo ontológico sobre la modalidad con el rechazo del racionalismo modal y sugiere que el realismo modal exige racionalismo modal.

I discuss the peculiar optimism present in an influential strand of analytic philosophy, and compare it with the more morose philosophical anthropology one might naturally pick up from other fields.

This paper is about three of the most prominent debates in modern epistemology. The conclusion is that three prima facie appealing positions in these debates cannot be held simultaneously. The first debate is scepticism vs anti-scepticism. My conclusions apply to most kinds of debates between sceptics and their opponents, but I will focus on the inductive sceptic, who claims we cannot come to know what will happen in the future by induction. This is a fairly weak kind of scepticism, and (...) I suspect many philosophers who are generally anti-sceptical are attracted by this kind of scepticism. Still, even this kind of scepticism is quite unintuitive. I’m pretty sure I know (1) on the basis of induction. (1) It will snow in Ithaca next winter. Although I am taking a very strong version of anti-scepticism to be intuitively true here, the points I make will generalise to most other versions of scepticism. (Focussing on the inductive sceptic avoids some potential complications that I will note as they arise.) The second debate is a version of rationalism vs empiricism. The kind of rationalist I have in mind accepts that some deeply contingent propositions can be known a priori, and the empiricist I have in mind denies this. Kripke showed that there are contingent propositions that can be known a priori. One example is Water is the watery stuff of our acquaintance. (‘Watery’ is David Chalmers’s nice term for the properties of water by which folk identify it.) All the examples Kripke gave are of propositions that are, to use Gareth Evans’s term, deeply necessary (Evans, 1979). It is a matter of controversy presently just how to analyse Evans’s concepts of deep necessity and contingency, but most of the controversies are over details that are not important right here. I’ll simply adopt Stephen Yablo’s recent suggestion: a proposition is deeply contingent if it could have turned out to be true, and could have turned out to be false (Yablo, 2002)1. Kripke did not provide examples of any deeply contingent propositions knowable a priori, though nothing he showed rules out their existence.. (shrink)

I present a case for a rapprochement between aspects of rationalism and scientific realism, by way of a general framework employing modal epistemology and elements of 2-dimensional semantics (2DS). My overall argument strategy is meta-inductive: The bulk of this paper establishes a “base case,” i.e., a concretely constructive example by which I demonstrate this linkage. The base case or constructive example acts as the exemplar for generating, in a constructively ‘bottom-up’ fashion, a more generally rigorous case for rationalism-realism (...) qua modal epistemology. The exemple I choose in D. Chalmers’ (2002) modal rationalism and R. Giere’s (1985, 1988) constructive realism. I show by way of a thorough analysis how Giere’s claims concerning modal scope are characterized as instances of Chalmers’ modal rationalism, both weak and strong. In essence, as I demonstrate via Chalmers’ notions, ceteris paribus the constructive realist ultimately opts for a comparatively wider gate, characterized by modal reasoning, to lead from the rooms of conceivability qua thought experiments and models, to the pastures of metaphysical possibility. Chalmers likewise tries to erect such a wider gate, in his general conceivability-possibility theses. Anti-realists, on the other hand, see a narrower passage and my contention herein is that they suffer from modal myopia, which hopefully the ‘corrective vision’ of Chalmers’ modal rationalism can restore. In the introduction and concluding sections I sketch out suggestions of constructing ‘inductive steps’ from my base case, to generate more extensively general claims regarding realism qua rationalism. -/- . (shrink)

Philosophers debate about which logical system, if any, is the One True Logic. This involves a disagreement concerning the sufficient conditions that may single out the correct logic among various candidates. This paper discusses whether there are necessary conditions for the correct logic; that is, I discuss whether there are features such that if a logic is correct, then it has those features, although having them might not be sufficient to single out the correct logic. Traditional rationalist arguments suggest that (...) the necessary conditions of thought are necessary and sufficient conditions singling out the correct logical and mathematical theories. In the contemporary debate, Chalmers advocates a view along this line. Jago, analogously, suggests that the necessary conditions for thought—or, as he calls them, our basic epistemic expectations—single out a family of logical and mathematical theories. Warren and Williamson, on the other hand, argue that there are no necessary conditions of thought. I argue that there are necessary conditions for thought, and these are necessary but not sufficient conditions to be the correct logic; indeed, these are features that all logics—correct or incorrect—share. No view we can understand is ruled out by the necessary conditions for thought, but we cannot understand quite any view. Human linguistic and conceptual abilities are genetically constrained, and these constraints are our best guide to the boundaries of logic. Arguing for this, I tackle two dogmas of modern rationalism: namely, the view that the biological constraints of human cognition have no bearing on the boundaries of the epistemic space, and the view that the boundaries of thought coincide with the boundaries of language. (shrink)

The objection from the insolvability of principle-based modal disagreements appears to support the claim that there are no objective modal facts, or at the very least modal facts cannot be accounted for by modal rationalist theories. An idea that resurfaced fairly recently in the literature is that the use of ordinary empirical statements presupposes some prior grasp of modal notions. If this is correct, then the idea that we may have a total agreement concerning empirical facts and disagree on modal (...) facts, which is the starting point of the objection from the insolvability of modal disagreement, is undercut. This paper examines the no-separation thesis and shows that some of the arguments against the classical (empiricist) distinction between empirical and modal statements fail to be conclusive if they are taken to defend a strong notion of metaphysical possibility. The no-separation thesis appears to work only in theoretical frameworks where metaphysical modalities are considered (broadly) conceptual. For these reasons, the no-separation thesis cannot save modal rationalism from the insolvability of modal disagreement. (shrink)

Rationalism, my target, says that in order to have perceptual knowledge, such as that your hand is making a fist, you must “antecedently” (or “independently”) know that skeptical scenarios don’t obtain, such as the skeptical scenario that you are in the Matrix. I motivate the specific form of Rationalism shared by, among others, White (Philos Stud 131:525–557, 2006) and Wright (Proc Aristot Soc Suppl Vol 78:167–212, 2004), which credits us with warrant to believe (or “accept”, in Wright’s terms) (...) that our senses are reliably veridical, where that warrant is one we enjoy by default, that is, without relying on any evidence or engaging in any positive argument. The problem with this form of Rationalism is that, even if you have default knowledge that your senses are reliable, this is not adequate to rule out every kind of skeptical scenario. The problem is created by one-off skeptical scenarios, scenarios that involve a highly reliable perceiver who, by a pure fluke, has a one-off, non-veridical experience. I claim you cannot infer that your present perceptual experience is veridical just on the basis of knowledge of your general reliability. More generally, if you infer that the present F is G, just on the basis of your knowledge that most Fs are Gs, this is what I call statistical inference, and, as I argue, statistical inference by itself does not generate knowledge. I defend this view of statistical inference against objections, including the objection that radical skepticism about our ordinary inductive knowledge will follow unless statistical inference generates knowledge. (shrink)

In this chapter, it is suggested that our epistemic access to metaphysical modality generally involves rationalist, a priori elements. However, these a priori elements are much more subtle than ‘traditional’ modal rationalism assumes. In fact, some might even question the ‘apriority’ of these elements, but I should stress that I consider a priori and a posteriori elements especially in our modal inquiry to be so deeply intertwined that it is not easy to tell them apart. Supposed metaphysically necessary identity (...) statements involving natural kind terms are a good example: the fact that empirical input is crucial in establishing their necessity has clouded the role and content of the a priori input, as I have previously argued. For instance, the supposed metaphysically necessary identity statement involving water and its microstructure can only be established with the help of a controversial a priori principle concerning the determination of chemical properties by microstructure. The Kripke-Putnam framework of modal epistemology fails precisely because it is unclear whether the required a priori element is present. My positive proposal builds on E. J. Lowe’s work. Lowe holds that our knowledge of metaphysical modality is based on our knowledge of essence. Lowe’s account strives to offer a uniform picture of modal epistemology: essence is the basis of all our modal knowledge. This is the basis of Lowe’s modal rationalism. I believe that Lowe’s proposal is on the right lines in the case of abstract objects, but I doubt that it can be successfully applied to the case of natural kinds. Accordingly, the case of natural kinds will be my main focus and I will suggest that modal rationalism, at least as it is traditionally understood, falls short of explaining modal knowledge concerning natural kinds. Yet, I think that Lowe has identified something of crucial importance for modal epistemology, namely the essentialist, a priori elements present in our modal inquiry. The upshot is that rather than moving all the way from modal rationalism to modal empiricism, a type of hybrid approach, ‘empirically-informed modal rationalism ’, can be developed. (shrink)

This paper traces the ancestry of a familiar historiographical narrative, according to which early modern philosophy was marked by the development of empiricism, rationalism, and their synthesis by Immanuel Kant. It is often claimed that this narrative became standard in the nineteenth century, due to the influence of Thomas Reid, Kant and his disciples, or German Hegelians and British Idealists. The paper argues that the narrative became standard only at the turn of the twentieth century. This was not due (...) to the influence of Reid, German Hegelians, or British Idealists as they did not endorse the narrative, although Thomas Hill Green may have facilitated its uptake. The narrative is based on Kant’s historiographical sketches, as corrected and integrated by Karl Leonhard Reinhold. It was first fleshed out into full-fledged histories by two Kantians, Wilhelm Gottlieb Tennemann and Johann Gottlieb Buhle. Numerous historians, several of whom were not Kantians, spread it in the English-speaking world. They include Kuno Fischer, Friedrich Ueberweg, Richard Falckenberg, and Wilhelm Windelband. However, the wide availability of their works did not suffice to make the narrative standard because, until the 1890s, the Hegelian account was at least as popular as theirs. Among the factors that allowed the narrative to become standard are its aptness to be adopted by philosophers of the most diverse persuasions, its simplicity and suitability for teaching. (shrink)

The paper begins with a clarification of the notions of intuition (and, in particular, modal intuition), modal error, conceivability, metaphysical possibility, and epistemic possibility. It is argued that two-dimensionalism is the wrong framework for modal epistemology and that a certain nonreductionist approach to the theory of concepts and propositions is required instead. Finally, there is an examination of moderate rationalism’s impact on modal arguments in the philosophy of mind -- for example, Yablo’s disembodiment argument and Chalmers’s zombie argument. A (...) less vulnerable style of modal argument is defended, which nevertheless wins the same anti-materialist conclusions sought by these other arguments. (shrink)

Several scholars have criticized the histories of early modern philosophy based on the dichotomy of empiricism and rationalism. They view them as overestimating the importance of epistemological issues for early modern philosophers (epistemological bias), portraying Kant's Critical philosophy as a superior alternative to empiricism and rationalism (Kantian bias), and forcing most or all early modern thinkers prior to Kant into the empiricist or rationalist camps (classificatory bias). Kant is often said to be the source of the three biases. (...) Against this criticism, this paper argues that Kant did not have the three biases. However, he promoted a way of writing histories of philosophy from which those biases would naturally flow. (shrink)

IN THIS PAPER, I make a presumptive case for moral rationalism: the view that agents can be morally required to do only what they have decisive reason to do, all things considered. And I argue that this view leads us to reject all traditional versions of act‐consequentialism. I begin by explaining how moral rationalism leads us to reject utilitarianism.

This paper takes up an important epistemological challenge to the naturalistic moral realist: that her metaphysical commitments are difficult to square with a plausible rationalist view about the epistemology of morality. The paper begins by clarifying and generalizing this challenge. It then illustrates how the generalized challenge can be answered by a form of naturalistic moral realism that I dub joint-carving moral realism. Both my framing of this challenge and my answer advertise the methodological significance of non-fundamental epistemological theorizing, which (...) defends and deploys epistemological claims without adverting to the most fundamental epistemological facts. (shrink)

This paper sheds light on Kant’s notion of autonomy in his moral philosophy by considering Kant’s critique of the rationalist theories of morality that Kant discussed in his lectures on practical philosophy from the 1760s to the time of the Groundwork. The paper first explains Kant’s taxonomy of moral theories and his perspective on the history of ethics. Second, it considers Kant's arguments against the two main variants of ‘rationalism’ as he construes it, that is, perfectionism and theological voluntarism, (...) pointing out the similarities to previous criticisms. Third, the paper argues that Kant’s discussion of the 'rationalist' views does not amount to an unqualified dismissal, but to an attempt at working out a novel rationalist position. Kant’s criticisms of rationalist views suggest that his project emerges from the failures of previous rationalism, with the aim to work out a rationalist view that can account for moral obligation by integrating insights from the theological conception. The combination of perfectionism and theological views yields the basic outline of the idea of autonomy, consisting in the lawgiving function of a rational will as a key to the legislation of a necessary law. (shrink)

It used to be thought that rational coherence and metaphysical possibility went hand in hand. Kripke and Putnam put a spanner in the works by proposing examples of propositions which seem to violate this principle. I will propose a nuanced form of modal rationalism consistent with the Kripke/putnam cases. The rough idea is that rational coherence entails possibility when you grasp the essential nature of what you’re conceiving of.

Rationalist accounts of the development of folk-psychology maintain that the acquisition of this capacity is aided by special-purpose mechanisms rich in innate structure. Rationalists have typically maintained that false-belief understanding (FBU) emerges very early on, before the age of two. To explain why young children nonetheless fail the false-belief task, rationalists have suggested that they may have troubles expressing their FBU. Here I do two things. First, I argue that extant proposals about what might prevent children from expressing their FBU (...) cannot explain some of the relevant data. Second, I put forward a new rationalist proposal, the processing-time account, according to which young children fail because they cannot carry out all the required processing in the time available. I argue that the processing-time account overcomes the challenges extant rationalist accounts face while being compatible with the evidence in their support, thereby providing a compelling explanation of the development of FBU. (shrink)

This article explores Galen's analysis of and response to the Rationalist and Empiricist medical sects. It argues that his interest in their debate concerning the epistemology of medicine and anatomy was key to his advancement of an experimental methodology.

Thomas Mann's "Death in Venice" is a profound fable, delivering a poignant moral lesson: suppressing one's desires can lead to distortion and an unhealthy, obsessive attachment. This, in turn, may trigger frantic and perverse attempts to obtain the initial object of desire. Aschenbach's inability to confront and satisfy his sexual urges ultimately becomes his undoing. This moral framework enables me to delve deeper into Aschenbach's actions, shedding light on the underlying animal instincts that drive his inner struggle. As a character, (...) Aschenbach embodies the archetype of the rational individual who endeavors to govern his primal, carnal urges. However, when his intellectual defenses crumble in the face of his raw desires, the battle between restraint and longing escalates into a whirlwind of uncontrollable actions. These actions catch Aschenbach off guard, and he never anticipated falling victim to them, nor did he mistrust his ability to control them. Paradoxically, he regains a semblance of control through his commitment to literary honor and morality. (shrink)

This paper constitutes one extended argument, which touches on various topics of Critical Rationalism as it was initiated by Karl Popper and further developed in his aftermath. The result of the argument will be that critical rationalism either offers no solution to the problem of induction at all, or that it amounts, in the last resort, to a kind of Critical Rationalist Inductivism as it were, a version of what I call Good Old Induction. One may think of (...) David Miller as a contemporary representative of what I consider as the ‘no solution’ version of critical rationalism, while Alan Musgrave stands for the version of ‘critical rationalist induction’. Popper’s own writings admit of either interpretation. (shrink)

This study is the first part of an attempt to settle a vigorous debate among historians of medieval philosophy by harnessing the resources of analytic philosophy. The debate is about whether Avicenna's epistemology is rationalist or empirical. To settle the debate, I first articulate in this article the three core theses of rationalism and one core thesis of empiricism. Then, I probe Avicenna's epistemology in his major works according to the first core thesis of rationalism (the intuition thesis). (...) In the end, I find Avicenna committed to this thesis in at least one substantive way, namely, in his claim to intuit the intelligible forms or essences. This suffices to count Avicenna as rationalist. In a subsequent article, I shall probe Avicenna's epistemology according to the other two core theses of rationalism, presenting further evidence that he was a rationalist, not an empiricist. (shrink)

Recently influential “rationalist” views of self-knowledge about our rational attitudes hold that such self-knowledge is essentially connected to rational agency, and therefore has to be particularly reliable, immediate, and distinct from third-personal access. This approach has been challenged by “theory theory” or “interpretationist” views of self-knowledge: on such views, self-knowledge is based on the interpretation of information about ourselves, and this interpretation involves the same mindreading mechanisms that we use to access other persons’ mental states. Interpretationist views are usually dismissed (...) as implausible and unwarranted by advocates of rationalism. In this article, I argue that rationalists should revise their attitude towards interpretationism: they can, and ought to, accept themselves a form of interpretationism. First, I argue that interpretationism is correct at least for a substantive range of cases. These are cases in which we respond to a question ab.. (shrink)

The purpose of this discussion is twofold. First, I want to shed some light on Kant's concept of personhood as rational agency, by situating it in the context of the first Critique's conception of the self as defined by its rational dispositions. I hope to suggest that this concept of personhood cannot be simply grafted onto an essentially Humean conception of the self that is inherently inimical to it, as I believe Rawls, Gewirth, and others have tried to do. Instead (...) I will try to show how deeply embedded this concept of personhood is in Kant's conception of the self as rationally unified consciousness. Second, I want to deploy this embedded concept of personhood as the basis for an analysis of the phenomenon of xenophobia. (shrink)

Gregory Kavka's 'Toxin Puzzle' suggests that I cannot intend to perform a counter-preferential action A even if I have a strong self-interested reason to form this intention. The 'Rationalist Solution,' however, suggests that I can form this intention. For even though it is counter-preferential, A-ing is actually rational given that the intention behind it is rational. Two arguments are offered for this proposition that the rationality of the intention to A transfers to A-ing itself: the 'Self-Promise Argument' and David Gauthier's (...) 'Rational Self-Interest Argument.' But both arguments – and therefore the Rationalist Solution – fail. The Self-Promise Argument fails because my intention to A does not constitute a promise to myself that I am obligated to honor. And Gauthier's Rational Self-Interest Argument fails to rule out the possibility of rational irrationality. (shrink)

Analysis of how intellectual historians and sociologists of science differ.

In Regard for Reason in the Moral Mind, Joshua May argues successfully that many claims about the causal influence of affect on moral judgment are overblown. But the findings he cites are compatible with many of the key arguments of philosophical sentimentalists. His account of rationalism, in turn, relies on an overly broad notion of inference, and leaves open crucial questions about how we reason to moral conclusions.

Descartes is notorious for holding a strong anti-vacuist position. On his view, according to the standard reading, empty space not only does not exist in nature, but it is logically impossible. The very notion of a void or vacuum is an incoherent one. Recently Eric Palmer has proposed a revisionist reading of Descartes on empty space, arguing that he is more sanguine about its possibility. Palmer makes use of Descartes’ early correspondence with Marin Mersenne, including his commentary on Galileo’s Two (...) New Sciences. I argue that Palmer’s reading is mistaken, and that it relies on an understandable but faulty inference—i.e., that if Descartes considers the implications of an opposing view, he must find it at least coherent. Descartes, as I show from his correspondence and other texts, uses a variety of persuasive strategies, and levels charges of different logical strength, against positions which he takes to be incoherent. Thus we cannot infer from the fact that Descartes argues, e.g., that something is a superfluous theoretical entity, that he admits that entity’s coherence. He often chooses to argue a weaker thesis against an opponent so that he can use an argument to which the opponent is more likely to agree. (shrink)

One of the most oft-cited parts of Francis Hutcheson’s Illustrations upon the Moral Sense (1728) is his discussion of “exciting reasons.” In this paper I address the question: What is the function of that discussion? In particular, what is its relation to Hutcheson’s attempt to show that the rationalists’ normative thesis ultimately implies, contrary to their moral epistemology, that moral ideas spring from a sense? Despite first appearances, Hutcheson’s discussion of exciting reasons is not part of that attempt. Mainly, it (...) is part of Hutcheson’s comeback to Gilbert Burnet’s objections to Hutcheson’s Inquiry into the Original of Our Ideas of Beauty and Virtue (1725). (shrink)

In his early experimental work with Suppes, Davidson adopted rationality assumptions, not as necessary constraints on interpretation, but as practical conceits in addressing methodological problems faced by experimenters studying decision making under uncertainty. Although the content of their theory has since been undermined, their methodological approach—a Galilean form of methodological rationalism—lives on in contemporary psychological research. This article draws on Max Weber’s verstehen to articulate an account of Galilean methodological rationalism; explains how anomalies faced by Davidson’s early experimental (...) work gave rise to his later, canonical claims about rationality and interpretation; and reclaims this Galilean framework for use in contemporary psychological research. (shrink)

My dissertation covers a number of different topics in Kant scholarship, but is driven by one central question: how do our sense-based capacities to perceive, desire, and feel relate to our capacity to reason? I take the answer to this question to be key to understanding much about Kant’s philosophical system. For topics as diverse as the role that sensation plays in practical knowledge, the character of moral motivation, the nature of evil, or Kant’s theory that we are morally required (...) to believe in our immortality and God’s existence, I claim that the correct reading turns on a novel approach to the relation between our rational and sensitive capacities. To properly understand this relation, we must overcome the deeply entrenched thought that Kant inherits his conception of reason from the rationalists, and his conception of sense experience from the empiricists. This would be to adopt a fundamentally dualistic philosophy, on which reason and the senses are independently intelligible and sometimes even diametrically opposed. On Kant’s actual view, our capacities to perceive, feel, and desire are metaphysically interdependent with and thus not intelligible in isolation from our capacity to reason. Developing the details of this more unified position leads to satisfying philosophical accounts of a number of controversial issues in Kant scholarship that have suffered under a dualistic framework. (shrink)

The main thesis of Michael Della Rocca’s outstanding Spinoza book (Della Rocca 2008a) is that at the very center of Spinoza’s philosophy stands the Principle of Sufficient Reason (PSR): the stipulation that everything must be explainable or, in other words, the rejection of any brute facts. Della Rocca rightly ascribes to Spinoza a strong version of the PSR. It is not only that the actual existence and features of all things must be explicable, but even the inexistence – as well (...) as the absence of any feature of any thing – demands an explanation. Della Rocca does not stop here, however. He feeds his PSR monster with some more powerful steroids and suggests that Spinoza advocates what he terms “the twofold use of the PSR.” It is not only that everything must be explained and made intelligible, but it must ultimately be explained in terms of explainability or intelligibility itself. This twofold use of the PSR is the key to the entire book. Della Roca’s strategy throughout the book is to argue that any key feature of Spinoza’s system – be it causality, inherence, essence, consciousness, existence, rejection of teleology, goodness or political right – must be explained, and ultimately it must be explained in terms of intelligibility. “Spinoza single-mindedly digs and digs until we find that the phenomenon in question is nothing but some form of intelligibility itself, of explicability itself” (Della Rocca 2008a: 2). Della Rocca’s book came out together with a cluster of articles in which he develops in detail his new reading of Spinoza. In one of these articles, he warns the reader: “Don’t let me start” (Dell Rocca 2010: 1). The train that is about to embark leads to very bizarre terrain, and thus one should think twice before embarking on the “PSR Express.” In this paper I argue that the train was hijacked. This was a perfect crime: without anyone noticing it, the engine driver diverted the train to a new route, and as with other perfect crimes, it is none but the criminal himself who is capable of, and indeed will, bring about his own demise. As I will later argue, Della Rocca’s “PSR-on-steroids” will eventually cripple reason itself. But let us not run too fast, and start at the very beginning. I happily – or at least, so I think - board the “PSR Express.” I believe Spinoza is strongly committed to the PSR and makes very significant use of this principle, but, unlike Della Rocca, I do not think the PSR is the key to all mysteries Spinozist, nor do I believe Spinoza was committed to the reductionist program of explaining all things through intelligibility (i.e., the second use of the PSR). (shrink)

Artifacts are ubiquitous and influential in our world, but their nature and existence are controversial. Several theories have been proposed to explain the ontology of artifacts. Drawing on Popper's theory of three worlds, this paper suggests a metaphysics for artifacts along the line of a critical rationalist (CR) approach. This theory distinguishes between three realms of reality: the physical world (World 1), the mental world (World 2), and the world of objective knowledge (World 3). The paper argues that artifacts have (...) different ontological components that correspond to these three realms, and that each component is real and causal. The paper shows how this perspective can account for the intentional and functional aspects of artifacts, as well as their dependence on plans that influence different realms of reality. The paper explains how this pluralistic ontology, compared to the rival theories, enables one to explain the relevant ontological problems of artifacts. The paper also explores how this proposal can lead to a research program encompassing a broader range of technologies, such as social artifacts. In sum, the paper suggests that Popper's three worlds theory provides a rich and comprehensive framework for understanding the metaphysics of artifacts. (shrink)

The rationalist lover accepts that whom she ought to love is whom she has most reason to love. She also accepts that the qualities of a person are reasons to love them. This seems to suggest that if the rationalist lover encounters someone with better qualities than her beloved, then she is rationally required to trade up. In this paper, I argue that this need not be the case and the rationalist lover can have just about as normal if not (...) a better romantic life than anyone could hope for. This is because we often do possess most reason to love our beloveds. To see why this is so, we have to think more carefully about (i) how we come to possess reasons for love and (ii) the higher-order reasons that govern whether we should seek or refrain from possessing said reasons. Reflection on these issues leads to what I call the Possession-Commitment Account of Love’s Reasons. I use this account to address additional worries for love rationalism and highlight how being rational about love can potentially get us out of romantic messes. I conclude that if being a rationalist about love is plausible after all, then we have reason to hope that being rational about other areas of our practical lives is plausible as well. (shrink)

Now Online: The Ethics of Rationalism & Empiricism Author: Irfan Ajvazi -/- The Ethics of Rationalism & Empiricism -/- Table of Contents: Chapter I: The Ethics of Rationalism Chapter II: Karl Popper and Rationalism Chapter III: Knowledge, Rationalism, Empiricism and the Kantian Synthesis Chapter IV: Kant’s Knowledge Empiricism and Rationalism Chapter V: The Radical Rationalism of Rene Descartes Chapter VI: Was Plato a rationalist or an empricist? Chapter VII: What is rationalism for (...) Descartes? Chapter VIII: What is Empiricism? Chapter IX: Is the rational-empirical form of epistemology superior to the religious form of epistemology? Chapter X: How was Betrand Russell a rationalist? -/- Rationalism is also contrasted with the idea that faith and revelation too are valid sources of knowledge and verification. -/- If you use the methods of the above three doctrines – namely of rationalism, empiricism and faith (revelation) – to assess the validity of the same doctrines for all practical purposes, we can see that all of them have their place in life as lived by us every day. The problem is when the adherents of each of these doctrines claim that only that particular doctrine is valid to the exclusion of all others. In the march of human progress in all spheres of human endeavor such as science, technology, art and the efforts for peace-building and social cohesion among other things, we badly need reason, experience and faith. In the laboratories of science, experiments are conducted, the processes as well as their results are observed and inferences are made. In such cases, both observation using the senses and logical reasoning are crucial. In order to achieve social or national integration among disparate groups in the society or country for instance, we need to have faith not only in the goodness of our fellow beings, but also in the religious values of truth, justice and sympathy. The rationalists adopt a one-sided view of the world: they ignore a good share of the profound complexities of the wealth of human life. Their approach is effectively reductive, as they cast doubt on knowledge that is not derived by logical thinking. (shrink)

“Critical-Rationalist Libertarianism” (CRL) was replied to in “Libertarianism Without Argument” (the reply). Various points in that text are here given responses. Both critical rationalism and how it applies to libertarianism are elucidated and elaborated. This response will proceed by quoting the reply where relevant (virtually all of it) and then responding immediately after the quotations, following the order of the reply’s very brief “critique” (605 words).

Through his phenomenological approach, Husserl criticized the situation of science and called it a crisis. He aimed to suggest a way out of this crisis by presenting a philosophical program. However, restoring philosophy to its ancient unifying situation, saving science from this crisis, and giving it a human face, requires, according to critical rationalism, to consider the objectivity and rationality of science. Ignoring these considerations puts science on an incorrect and inconvenient path. These considerations require a revision of Husserl’s (...) essentialism and justificationsim, and placing truth as the aim of science. (shrink)

1) Introduction. 2) The key libertarian insight into property and orthodox libertarianism’s philosophical confusion. 3) Clearer distinctions for applying to what follows: abstract liberty; practical liberty; moral defences; and critical rationalism. 4) The two dominant (‘Lockean’ and ‘Hobbesian’) conceptions of interpersonal liberty. 5) A general account of libertarianism as a subset of classical liberalism and defended from a narrower view. 6) Two abstract (non-propertarian, non-normative) theories of interpersonal liberty developed and defended: ‘the absence of interpersonal initiated imposed constraints on (...) want-satisfaction’, abbreviated to ‘no initiated imposed costs’; and ‘no imposed costs’. 7) Practical implications for both main abstract conceptions of liberty derived and compared. 8) How this positive analysis relates to morals. 9) Concluding conjectures: the main abstract theory of liberty captures the relevant interpersonal conception; the new paradigm of libertarianism solves the old one’s problems. (shrink)

Arthur Schopenhauer's “The World as Will and Representation” is a continuation and completion of the Kantian philosophical project. Schopenhauer proposes that rather than causality being an empirical consequence, as Kant implies in his Critique of Pure Reason, causality is an a priori phenomenon, happening independent of any knowledge of causality itself. Therefore, he challenges Kantian rationalism with pessimism. To begin this work stating the stark contrast between Kant’s epistemology and Schopenhauer’s, I note the few yet crucial characteristics to consciously (...) consider from Schopenhauer’s aesthetics: (1) there is no rationality to nature; (2) there is no ‘purposeness’ in life; and (3) human beings are not fundamentally rational. These each are expanded upon and discussed in unison with Kant's sentiments. In describing Schopenhauer's philosophy of the human experience, it is useful to refer to his interest in Indian philosophies and religions, which is briefly mentioned in this work by way of the famous paradox proposed by Nāgārjuna. The major point of divergence, it appears, between the two great minds reveals itself in their conception of the human experience and perception. Kant describes a reality consisting of mental representations whose nature is suggested to be a posteriori, Schopenhauer understands reality to be noumenal and its perception by sentient life to be indirect, subject-dependent, and consequently a priori. (shrink)