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.

The Principle of Sufficient Reason states that everything has an explanation. But different notions of explanation yield different versions of this principle. Here a version is formulated in terms of the notion of a “grounding” explanation. Its consequences are then explored, with particular emphasis on the fact that it implies necessitarianism, the view that every truth is necessarily true. Finally, the principle is defended from a number of objections, including objections to necessitarianism. The result is a defense of a “rationalist” (...) metaphysics, one that constitutes an alternative to the contemporary dogmas that some aspects of the world are “metaphysically brute” and that the world could in so many ways have been different. (shrink)

ABSTRACT According to an important version of the Principle of Sufficient Reason, every fact has a metaphysical explanation, where a metaphysical explanation of some fact tells us what makes it the case that the fact obtains. I argue that, so long as we have not yet discovered that any fact is brute, we ought to be committed to this version of the principle—henceforth ‘the PSR’—because it is indispensable to a species of inquiry in which we ought to engage. (...) I argue, first, that a practical indispensability argument applied to this species of inquiry supports a commitment to the PSR. I then show that we ought to engage in this inquiry. If my argument succeeds, then our attitude at the outset of such inquiry should not be agnosticism about whether any particular fact has a metaphysical explanation. Instead, we ought to be committed to the PSR. (shrink)

Isaiah Berlin's (1909-97) standing in twentieth-century intellectual history rests primarily upon his post-Second World War writings in political theory and the history of ideas. Berlin's investigations into the antagonistic traditions of Enlightenment and Counter-Enlightenment thought, and his advocacy of liberal responses to the conflicts between values, which, he believed, were an unavoidable feature of the human condition, have been the subject of extensive discussion. Less has been written, however, about Berlin's formative experiences of analytic philosophy during the 1930s and late (...) 1940s. It is often assumed that Berlin 'abandoned' philosophy after the war in favour of the history of ideas. As such, there is a tendency in much of the existing literature to underestimate the influence of Berlin's early analytical work on his later historical and political writings. Indeed, Berlin's work is regularly thought to be marked by a fracture at which point the study of philosophy is relinquished for that of history and political theory. The present article will aim to challenge this reading of Berlin's work. The article will advance two main claims. Firstly, it will be argued that not only is Berlin's early work in analytic philosophy of interest to those concerned with the development of his thought as a whole but also that it is highly edifying for any understanding of the nature of the outlook contained in his later writings. Secondly, the article will maintain that there exists a degree of continuity in Berlin's thought that connects his earlier and later work in a manner reflecting a greater level of coherence than is generally assumed. The main theme of continuity emphasized in the article is represented by Berlin's critique of what he terms the 'fallacy of reduction'. (shrink)

THIS ARTICLE WAS ORIGINALLY GIVEN IN A SYMPOSIUM HONORING ROBERT L PATTERSON, AT THE MEETING OF THE SOCIETY FOR PHILOSOPHY OF RELIGION IN SAVANNAH, GEORGIA, FEBRUARY 24, 1977. IT CLAIMS THAT HIS PHILOSOPHICAL METHODOLOGY IS MORE INCLUSIVE, VARIED, AND POWERFUL THAN HIS OWN DESCRIPTION OF IT AS "THE A PRIORI METHOD" WOULD INDICATE. A SURVEY OF PATTERSON’S WORKS, A COMPARISON WITH RICHARD PRICE’S CRITICISM OF DAVID HUME ON MIRACLES, AND COMPARISON AND CONTRAST WITH JOHN LOCKE AND W E CHANNING, SHOW (...) THAT PATTERSON’S METHODOLOGY INCLUDES ASPECTS THAT ARE LOGICAL, EPISTEMOLOGICAL, A PRIORI, A POSTERIORI, SEMANTIC, ADOPTIVE, CONDITIONAL, COMPARATIVE AND PERSPECTIVAL. (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)

Aristotelian metaphysics is a change in the form of metaphysics, which seems to be extraneous to it but in reality co‐determines it in the most intimate way. Descartes’ Meditations are intellectual exercises that extend over six days. On almost every new day, a reference is made to the results or intermediary results of the previous day, or the spiritual experiences of the last days. This division into days, as well as the physical back‐references, mentioned in the First Meditation and repeated (...) in the Third, the repetitions, the monologue form, and other elements, point to the fact that Descartes’ Meditations must be understood within the tradition of philosophy in the sense of spiritual exercises. The knowledge of God must be considered as the highest stage of freedom. Descartes himself described the true path to the truth as the path a facilioribus ad difficiliora [from easier to more difficult things]. (shrink)

Rationalism offers an account of moral properties as a subset of the properties which serve to rationalize right actions, and these properties are fit to be the referents of our moral terms. That fitness can be exploited in constructing an externalist theory of reference determination for these terms. The resulting externalist theory draws support from standard responses to Moral Twin-Earth scenarios. The relevance of these responses to moral semantics has recently beenvigorously challenged by Dowell and by Schroeter and Schroeter. (...) The social character of meaning relations, which can explain the openness of questions about an analysis, may thereby also make Twin-Earth judgements beside the point. But the resources available to translators go beyond semantic competence and it is these resources that nonetheless make the Moral Twin-Earth responses relevant. (shrink)

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)

Mathematical practice prompts theories about aprioricity, necessity, abstracta, and non-causal epistemic connections. But it is not clear what to count as the data: mathematical necessity or the appearance of mathematical necessity, abstractness or apparent abstractness, a prioricity or apparent aprioricity. Nor is it clear whether traditional metaphysical theories provide explanation or idle redescription. This paper suggests that abstract objects, rather than doing explanatory work, provide codifications of the data to be explained. It also suggests that traditional rivals—conceptualism, nominalism, realism—engage (...) different explanatory projects, and thus are not rivals at all. (shrink)

In this book, Masooda Bano presents an in-depth analysis of a new movement that is transforming the way that young Muslims engage with their religion. Led by a network of Islamic scholars in the West, this movement seeks to revive the tradition of Islamic rationalism. Bano explains how, during the period of colonial rule, the exit of Muslim elites from madrasas, the Islamic scholarly establishments, resulted in a stagnation of Islamic scholarship. This trend is now being reversed. Exploring the (...) threefold focus on logic, metaphysics, and deep mysticism, Bano shows how Islamic rationalism is consistent with Sunni orthodoxy and why it is so popular among young, elite, educated Muslims, who are now engaging with classical Islamic texts. One of the most tangible results of this revival is that Islamic rationalism - rather than jihadism - is emerging as one of the most influential movements in the contemporary Muslim world. (shrink)

The paper demonstrates that a detailed analysis of Hegel’s criticism of rationalist metaphysics in the “Vorbegriff” (Preliminary Conception) chapter of the Encyclopedia Logic can shed light on the following critical features of Hegel’s metaphysics: (1) advancing semantic holism as an alternative to semantic atomism; (2) renouncing the projection of a substance-attribute formal structure onto actuality; (3) dismissing sense perception as the source of conceptual content; and (4) rejecting dualist ontology.

The philosophers René Descartes (1596–1650), Nicolas Malebranche (1638–1715), Benedict Spinoza (1632–77), and Gottfried Wilhelm Leibniz (1646–1716) are grouped together as rationalists because they held that human beings possess a faculty of reason that produces knowledge independently of the senses. In this regard, they contrast with empiricist philosophers, such as John Locke and David Hume, who believed that all knowledge arises from the senses. The rationalists contended that proper use of reason would yield the first principles of metaphysics, the most basic (...) science of all. Metaphysics was also called “first philosophy,” and it took as its subject matter nothing less than the basic properties and principles of everything. For our purposes, it is important to note that the rationalists believed that metaphysics could provide foundations for specialized disciplines, including ethics and physics, and also medicine and other applied subjects. The rationalists and their followers developed theoretical positions of ambitious intellectual scope, ranging from metaphysical conclusions about the existence and nature of God to detailed theories of physical and physiological processes. Although they put great store in the faculty of reason for establishing overarching principles, they looked to observation and experience to provide data and evidence for their detailed theories. They took special interest in the metaphysics and physics of the human organism, and this led them to psychological topics concerning the characteristics and principles of animal behavior, the process of sense perception, the passions, and emotions, and appetites, the cognitive operations of the mind (including attention and understanding), and the relation between mental phenomena and bodily processes in the brain and sense organs. The various rationalists, but especially Descartes, made original contributions to these topics. After considering the character of psychology as a discipline in the seventeenth century, we will examine these contributions in turn. (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)

Gerald Holton has famously described Einstein’s career as a philosophical “pilgrimage”. Starting on “the historic ground” of Machian positivism and phenomenalism, following the completion of general relativity in late 1915, Einstein’s philosophy endured (a) a speculative turn: physical theorizing appears as ultimately a “pure mathematical construction” guided by faith in the simplicity of nature and (b) a realistic turn: science is “nothing more than a refinement ”of the everyday belief in the existence of mind-independent physical reality. Nevertheless, Einstein’s mathematical constructivism (...) that supports his unified field theory program appears to be, at first sight, hardly compatible with the common sense realism with which he countered quantum theory. Thus, literature on Einstein’s philosophy of science has often struggled in finding the thread between ostensibly conflicting philosophical pronouncements. This paper supports the claim that Einstein’s dialog with Émile Meyerson from the mid 1920s till the early 1930s might be a neglected source to solve this riddle. According to Einstein, Meyerson shared (a) his belief in the independent existence of an external world and (b) his conviction that the latter can be grasped only by speculative means. Einstein could present his search for a unified field theory as a metaphysical-realistic program opposed to the positivistic-operationalist spirit of quantum mechanics. (shrink)

Modal rationalism includes the thesis that ideal primary positive conceivability entails primary possibility. Modal monism is the thesis that the space of logically possible worlds is coextensive with the space of metaphysically possible worlds. In this paper I explore the relation between the two theses. My aim is to show that the former thesis implies the latter thesis, and that problems with the latter make the former implausible as a complete picture of the epistemology of modality. My argument explores (...) the relation between logical modality and metaphysical modality. (shrink)

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 three great historical philosophers most often associated with rationalism - Descartes, Spinoza and Leibniz - opened up ingenious and breathtaking vistas upon the world. Yet their works are so difficult that readers often find themselves stymied. "Understanding Rationalism" offers a guide for anyone approaching these thinkers for the first time.With clear explanations, elegant examples and insightful summaries, "Understanding Rationalism" unlocks their intricate metaphysical systems, which are by turns surprising, compelling and sometimes bizarre. It also lays (...) out their controversial stances on moral, political and religious problems. The study is framed by an opening discussion of the broad themes and attitudes common to these three philosophers and a closing analysis of the legacy they left for the rest of philosophy. (shrink)

This book brings together thirteen articles on the most discussed thinkers in the rationalist movement: Descartes, Spinoza, Leibniz, and Malebranche. These articles address the topics in metaphysics and epistemology that figure most prominently in contemporary work on these philosophers. The articles have all been produced since 1980, and their authors are among the most respected in the field.

This chapter contains sections titled: Sense Perception as a Natural Process Metaphysical, Epistemological, and Functional Aspects of Perception Sense, Mind, and Knowledge in Seventeenth‐Century Rationalism.

Rationalism, Platonism and God comprises three main papers on Descartes, Spinoza and Leibniz, with extensive responses. It provides a significant contribution to the exploration of the common ground of the great early-modern Rationalist theories, and an examination of the ways in which the mainstream Platonic tradition permeates these theories. -/- John Cottingham identifies characteristically Platonic themes in Descartes's cosmology and metaphysics, finding them associated with two distinct, even opposed attitudes to nature and the human condition, one ancient and 'contemplative', (...) the other modern and 'controlling'. He finds the same tension in Descartes's moral theory, and believes that it remains unresolved in present-day ethics. -/- Was Spinoza a Neoplatonist theist, critical Cartesian, or naturalistic materialist? Michael Ayers argues that he was all of these. Analysis of his system reveals how Spinoza employed Neoplatonist monism against Descartes's Platonist pluralism. Yet the terminology - like the physics - is Cartesian. And within this Platonic-Cartesian shell Spinoza developed a rigorously naturalistic metaphysics and even, Ayers claims, an effectually empiricist epistemology. -/- Robert Merrihew Adams focuses on the Rationalists' arguments for the Platonist, anti-Empiricist principle of 'the priority of the perfect', i.e. the principle that finite attributes are to be understood through corresponding perfections of God, rather than the reverse. He finds the given arguments unsatisfactory but stimulating, and offers a development of one of Leibniz's for consideration. -/- These papers receive informed and constructive criticism and development at the hands of, respectively, Douglas Hedley, Sarah Hutton and Maria Rosa Antognazza. (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)

In Epistemic Two-Dimensional Semantics, David Chalmers seeks to develop a version of 2-D semantics which can vindicate the rationalist claim that there are constitutive connections between meaning, possibility and a priority. Chalmers lays out different ways of filling in his preferred epistemic approach to 2-D semantics so as to avoid controversial philosophical assumptions. In these comments, however, I argue that there are some distinctively rationalist commitments in Chalmers's epistemic approach to 2-D semantics. I start by explaining why Chalmers's approach requires (...) a canonical language that affords subjects accurate a priori access to the space of possibility. I then argue that traditional worries about rationalism will simply re-emerge as worries about whether there can be a canonical vocabulary and how we could come to recognize one if there were. The moral is that Chalmers's 2-D semantic framework builds in substantive metaphysical and epistemological commitments which stand in need of further defense. (shrink)

This chapter compares rationalist theories of sense perception to previously held theories of perception (especially of vision) and examines rationalist accounts of sensory qualities and sensory representation, of the role of the sense-based passions in guiding behavior, of the epistemological benefits and dangers of sense perception, and of mind–body relations. Each section begins with Descartes, the first major rationalist of the seventeenth century. The other major rationalists, Malebranche, Spinoza, and Leibniz, and also lesser known figures such as Pierre Regis, Jacques (...) Rohault, and Antoine Le Grand, were well acquainted with Descartes' work. Indeed, the first three were each deeply influenced by Descartes in their early years before developing their own philosophical systems, and the latter three were all advocates of Descartes' philosophy (perhaps with slight revision). Each of the major rationalists, while sharing some positions in common, developed a distinctive metaphysics of perception and of the mind–body relation. Earlier sections chart these differences and a final section sums up common features and touches on the continuing significance of their views. (shrink)

This volume is dedicated to questions about the nature and method of metaphysics in Classical German Philosophy. Its chapters offer original investigations into the metaphysical projects of many of the major figures in German philosophy between Wolff and Hegel. The period of Classical German Philosophy was an extraordinarily rich one in the history of philosophy, especially for metaphysics. It includes some of the highest achievements of early modern rationalism, Kant's critical revolution, and the various significant works of German (...) Idealism that followed in Kant's wake. The contributions to this volume critically examine certain common themes among metaphysical projects across this period, for example, the demand that metaphysics amount to a science, that it be presented in the form of a system, or that it should proceed by means of demonstration from certain key first principles. This volume also includes material on influential criticisms of metaphysical projects of this kind. Metaphysics as a Science in Classical German Philosophy is a useful resource for contemporary metaphysicians and historians of philosophy interested in engaging with the history of the methodology and epistemology of metaphysics. (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)

In these comments I briefly discuss three aspects of the empiricist account of the epistemic role of experience that Anil Gupta develops in his Empiricism and Experience. First, I discuss the motivations Gupta offers for the claim that the given in experience should be regarded as reliable. Second, I discuss two different ways of conceiving of the epistemic significance of the phenomenology of experience. And third, I discuss whether Gupta's account is able to deliver the anti-skeptical results he intends it (...) to. I close by suggesting that, once fully fleshed out, Gupta's account is best understood in terms of the fusion of certain core ideas within both the empiricist and the rationalist traditions. (shrink)

This chapter contains sections titled: The Emergence of Phenomenology Amid Varieties of Rationalism Phenomenology in Brief From Logic to Phenomenology A Phenomenological Theory of Knowledge Intuition of Essences Intuition of Meanings A Phenomenological Critique of Empiricism and Rationalism.

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)

In his book, Disagreement, Deference, and Religious Commitment, John Pittard presents and critiques what he calls the “master argument for disagreement-motivated religious skepticism.” This argument purports to show, using only higher-order reasoning and facts about religious disagreement, that nobody’s religious outlook is justified (at least, nobody aware of the argument). The master argument presupposes that any attempt to vindicate one’s religious outlook must employ dispute-independent reasons. Pittard objects to this assumption and argues, instead, for rationalist weak conciliationism: the view that (...) partisan justification can be had when (and only when) one has rational insight into the claim in question. In this paper, I raise a challenge for rationalist weak conciliationism; in short, it is difficult to explain why only rational insight provides partisan justification while maintaining that a wide range of beliefs, including religious beliefs, can be justified in a partisan way. (shrink)

This chapter contains sections titled: Introduction Descartes' Ethics Spinoza's Ethics Leibniz's Ethics Conclusion.

The expression “continental rationalism” refers to a set of views more or less shared by a number of philosophers active on the European continent during the latter two thirds of the seventeenth century and the beginning of the eighteenth. Rationalism is most often characterized as an epistemological position. On this view, to be a rationalist requires at least one of the following: (1) a privileging of reason and intuition over sensation and experience, (2) regarding all or most ideas (...) as innate rather than adventitious, (3) an emphasis on certain rather than merely probable knowledge as the goal of enquiry. While all of the continental rationalists meet one or more of these criteria, this is arguably the consequence of a deeper tie that binds them together—that is, a metaphysical commitment to the reality of substance, and, in particular, to substance as an underlying principle of unity. (shrink)

Spinoza Contra Phenomenology fundamentally recasts the history of postwar French thought, typically presumed to have been driven by a critique of reason indebted to Nietzsche and Heidegger. Although the reception of phenomenology gave rise to many innovative developments in French philosophy, from existentialism to deconstruction, not everyone in France was pleased with this German import. This book recounts how a series of French philosophers used Spinoza to erect a bulwark against the nominally irrationalist tendencies of phenomenology. From its beginnings in (...) the interwar years, this rationalism would prove foundational for Althusser's rethinking of Marxism and Deleuze's ambitious metaphysics. There has been a renewed enthusiasm for Spinozism of late by those who see his work as a kind of neo-vitalism or philosophy of life and affect. Peden counters this trend by tracking a decisive and neglected aspect of Spinoza's philosophy—his rationalism—in a body of thought too often presumed to have rejected reason. In the process, he demonstrates that the virtues of Spinoza's rationalism have yet to be exhausted. (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 Elibron Classics title is a reprint of the original edition published by H. Fluegel & Co. in Baltimore, 1902.

According to the scrutability argument against physicalism, an a priori gap between the physical and conscious experience entails a lack of necessitation and the falsity of physicalism. This paper investigates the crucial premise of the scrutability argument: the inference from an a priori gap to a lack of necessitation. This premise gets its support from modal rationalism, according to which there are important, potentially constitutive, connections between a priori justification and metaphysical modality. I argue against the strong form (...) of modal rationalism that underwrites the scrutability argument and suggest a more moderate rationalist view. I offer a novel demonstrative reply to the scrutability argument, according to which demonstratives play a vital role in the generation of meaning for our representations of conscious experience. This connection between conscious experience and demonstratives, rather than a metaphysical gap generated by the truth of dualism, is the source of the epistemic gap between consciousness and the physical. (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)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Rationalist Empiricism: A Theory of Speculative Critique by Nathan BrownGreg EllermannBrown, Nathan. Rationalist Empiricism: A Theory of Speculative Critique. Fordham University Press, 2021. 318pp.Nathan Brown's Rationalist Empiricism is, above all, a book about philosophical method. It is also a highly significant study of the conceptual architecture of Marxism, developed by way of a critical return to the lesson of Althusser. Drawing on a range of disparate materials–from the (...) works of Descartes, Hume, Hegel, Marx, Heidegger, and Meillassoux to contemporary experiments in digital photography and metrology–Brown demonstrates the necessity of "a mutual interruption of reason and experience" (31) for any theoretical or political practice that would avoid falling into ideological complacency.The book opens with an appraisal of "the speculative turn" (1) in 21st-century thought, a turn Brown characterizes as an intellectual dead-end. He remarks that the various new materialisms and object-oriented ontologies of the last decades were united by an inattention to method. Unconcerned to establish the necessity of their claims or with the relation between reasoning and reality, these philosophies made assertions instead of arguments; they mistook dogmatism for speculation.For Brown, it is the dialectic–specifically, the dialectic of reason and experience–that promises to renew the possibility of speculative thinking. Such renewal will entail refusing "the severance of speculation from critique" (2). It also requires thinking through a more basic problem: the relation between rationalism and empiricism. While rationalism "explore[s] what has to be thought according to the internal order and consistency of ideas," empiricism, as Brown has it, "claim[s] the genesis of ideas in experience" (3). Since Kant's first Critique, this binary and the effort to overcome it have set the terms of philosophical debate. Brown's striking contention is that the search for a synthesis or a hidden ground uniting these two positions (as, for instance, in Deleuze or Michel Henry) invariably leads us back to the transcendental–an improvement on the dogmatism of contemporary theory but a reduction of knowledge to "conditions of experience" [End Page 128] nonetheless (47). Brown therefore proposes another path: "a relational disjunction of rationalism and empiricism" animated by "the critical power of the tension between [them] to check one another's claims and to propel those claims further" (3). In other words, he develops a methodological dialectic whose two poles-the rationalist and the empiricist-alternately take on speculative and critical functions. There is no static alignment of the key categories in Brown's book. "Speculation and critique cannot be parceled out," he writes, "according to the division of reason and experience. Metaphysics, science, politics: each of these fields relies integrally upon the conflict and complementarity of reason and experience, their 'epistemological polarity'" (250). In Bachelard's terms, pivotal for the overall argument, reason and experience must be allowed to "transmute," "propel," and "say 'no' to one another" (8). It is their ungrounded dialectical relation that sustains true speculative thought.This methodological position has profound ontological implications. Looking to Althusser, Brown finds the beginnings of a theory of rationalist empiricism in the structural Marxist notion of the "concrete-in-thought" (15-16): the self-critical and experimentally verified knowledge of a science. Crucially, for Althusser there can be no concrete-in-thought without a "concrete-real," external to theory itself (15). Developing to the fullest this underappreciated point, Brown shows that rationalist empiricism must be a realism. Thus, the book's second, third, and fourth chapters elaborate a continuous argument concerning "the primacy of being over thought" (59), and the relationship between speculative and scientific knowledge. The central question is how speculation might extend or "extrapolate from the exteriorizing force of science, without being reducible to its forms of experience" (261). Refracting Hegel's Logic through the thought of Heidegger and Meillassoux, Brown ultimately offers a new account of the ontological difference–between being and beings, between speculative truth and "ontic," scientific knowledge–that privileges neither side and insists on their coordination. Once again, he declines to seek a synthesis, arguing that "true critique" (as Hegel characterized his speculative method) depends on "the ontological primacy of becoming" (91), on an absolute time bound up with... (shrink)

This chapter contains sections titled: The Interpretation of Scripture Reason and the Law Reason and Happiness The Spinozistic Denouement.

This collection presents some of the most vital and original recent writings on Descartes, Spinoza, and Leibniz, the three greatest rationalists of the early modern period. Their work offered brilliant and distinct integrations of science, morals, metaphysics, and religion, which today remain at the center of philosophical discussion. The essays written especially for this volume explore how these three philosophical systems treated matter, substance, human freedom, natural necessity, knowledge, mind, and consciousness. The contributors include some of the most prominent writers (...) in the field, including Jonathan Bennett, Michael Della Rocca, Jan A. Cover, Catherine Wilson, Stephen Voss, Edwin Curley, Don Garrett, and Margaret D. Wilson. (shrink)

The lesson is familiar. Kripke’s arguments in favor of a posteriori necessary truths annul the idea that conceivability is a guide to metaphysical possibility because determining that which is a priori is a separate issue from determining that which is necessary. Modal rationalists do not completely agree with this conclusion. Following recent work on two-dimensional semantics, David Chalmers suggests that two distinct semantic values can be assigned to a statement, depending on whether we consider possible worlds as counterfactual or (...) counteractual. The idea is that counterfactual possibilities yield familiar Kripkean intuitions, but that counteractuals fulfill the desired link between a priori conceivability and metaphysical possibility. In this paper, I discuss a problem for modalrationalism that arises through the use of material conditionals, or conditionals in the indicative mood. I then turn to Chalmers’ response, and suggest reasons why it is inadequate. I turn to another response from Chalmers, and suggest that, whilst it solves the fi rst issue, it is incapable of grounding modal rationalism. In conclusion I will suggest a way in which a tempered version of modal rationalism can be salvaged. (shrink)

BonJour’s intricately argued and provocative book raises a fundamental challenge for the empiricist: if we lack the capacity for direct apprehension of necessary truths, how do we know so much? How do we know about logic and mathematics and other apparently a priori subjects? How do we know about generalities, about the past and the future, about objects that are not present? How do we know about the relations that hold between premises and conclusions? If the first half of BonJour’s (...) book is right, the empiricist is unable to answer these questions, for she is unable to explain how our beliefs in such things are justified. Lacking such an explanation, the empiricist would be committed to an extreme and unacceptable form of skepticism—call this the indispensability argument. The rationalist, by contrast, has an answer to these questions, and if the second half of BonJour’s book is right, the answer is both epistemologically and metaphysically unobjectionable— call this the possibility argument. (shrink)

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 introduction presents an overview of key concepts discussed in the subsequent chapters of this book. The book provides an exposition of the relation between Immanuel Kant's ethical and metaphysical views, with special reference to works other than the first two Critiques and the Groundwork. It shows that the categorical nature of moral obligation, yet Kantian ethics is, in a fundamental sense, a teleological ethic, concerned above all with ends of action, human fulfilment and happiness. The book outlines the (...) development of Kant's metaphysical and ethical views in a way which may illuminate some of his betterknown doctrines by tracing their origin and setting them in the wider context of his thought. It also expresses that Kant was driven both by a desire to believe in his spiritual vision and by the equally strong awareness that he could not justify it. (shrink)