Certainty and Practical Reason is concerned with Kant's practical response to epistemological skepticism and radical doubt. ;It begins from Kant's remark that the concept of freedom is the keystone of the arch of reason, theoretical as well as practical, and sustains reason against skepticism; and from Kant's account of the practical motives of transcendental realism, the source of skepticism, in the First and Second Critiques. The Critiques suggest both that Kant's response to (...) skepticism is practical, and that skepticism is itself both practically motivated and associated with practical error. ;In the first chapter, it is argued that the Transcendental Analytic of the First Critique is not a final refutation of skepticism and radical doubt, and that Kant does not see it as such. The theoretical arguments of the Transcendental Analytic need to be completed with an appeal to practical reason if we are to ground Kant's starting assumption, the fact of experience. ;The second chapter considers epistemological skepticism as involving a practical error answered by the practical cure of the categorical imperative. ;The third chapter begins by considering Cartesian doubt as a practically motivated attempt to pose the problem of practical rationality, and Kant's response to this problem. It then discusses Kant's view that the transcendental realist demand for knowledge of the noumenal, which gives rise to skeptical doubt, is a pursuit of the unconditioned whose hidden meaning is practical; and explains how Kant responds to the doubt by responding to and interpreting transcendental realism as a practical project. ;The fourth chapter discusses the Critique of Judgment as a response to "enthusiasm" or the transcendental realist claim to knowledge of the unconditioned, and thereby to skepticism as well. (shrink)

In this chapter, I compare and contrast Kant’s and Sidgwick’s arguments in defense of moral cognition as objective practical knowledge. Kant focuses on practical truths in terms of practical laws governing the mind in action, while Sidgwick is concerned with practical truths about action. I argue that this is a crucial difference in the understanding of practical knowledge, which is matched by a different understanding of moral phenomenology and of the significance of subjective (...) experience in accounting for the authority of moral obligations. Key to these differences is a more fundamental divergence regarding the nature of reflection, its dynamics, and its impact on agency. (shrink)

Many seventeenth- and eighteenth-century philosophers of the Enlightenment, such as Hobbes, Spinoza, Locke, Shaftesbury, Hume, Voltaire, and Diderot, criticized religious doctrines not only because (or when) such doctrines comprised unfounded claims to knowledge, but also because they inspired fanaticism, ensuing in sectarian violence, persecution, torture, and war. In this paper, I attempt to reconstruct Kant’s position, as part of this Enlightenment project: he too repeatedly and pejoratively characterizes various forms of belief in or behavior guided by religious (or other) (...) conceptions of the supersensible as “fanaticism” (Schwärmerei). By comparison to many Enlightenment figures, Kant’s understanding of the relation between the human presumption to knowledge of the supersensible and the deliverances of reason is more sympathetic to the claims of religious belief and more qualified in advocating the corrective power of reason against it. I argue that Kant’s conception of fanaticism – its origins, motivations, and the nature of its error – reflects this more qualified endorsement of reason. I suggest that by contrast to many of his predecessors and contemporaries Kant does not treat fanaticism as expressing or originating wholly from sensible emotions or interests, opposed to and “overpowering” reason. Rather, though sensibility (including emotional sensibility) is central to his account of fanaticism, Kant holds that the problematic fanatical stance incorporates and depends on rational projections or aspirations, particularly those of practical reason. Moreover, Kant’s distinction between theoretical and practical reason generates an interesting, dual account of fanaticism: theoretical fanaticism, a kind of cognitive error, and practical fanaticism, a specifically practical error in our relation to the supersensible. (shrink)

Kant developed a distinctive method of philosophical argumentation, the method of transcendental argumentation, which continues to have contemporary philosophical promise. Yet there is considerable disagreement among Kant's interpreters concerning the aim of transcendental arguments. On ambitious interpretations, transcendental arguments aim to establish certain necessary features of the world from the conditions of our thinking about or experiencing the world; they are world-directed. On modest interpretations, transcendental arguments aim to show that certain beliefs have a special status that renders them (...) invulnerable to skeptical doubts; they are belief-directed. This paper brings Kierkegaard's thesis of the “subjectivity of truth” to bear on these questions concerning the aim of transcendental arguments. I focus on Kant's argument for the postulate of God's existence in his Critique of Practical Reason and show that Kierkegaard's thesis of the subjectivity of truth can help us construe the argument as both belief and world directed. Yet I also argue that Kierkegaard's thesis of the subjectivity of truth can help us understand the source of our dissatisfaction with Kant's transcendental arguments: It can help us understand that dissatisfaction as an expression of what Stanley Cavell calls the “cover of skepticism,” the conversion of metaphysical finitude into intellectual lack. (shrink)

Stephen Engstrom has recently offered an excellent account of morality as practical cognition. He emphasizes the formal conditions of practical knowledge, which he finds in Kant. Engstrom also aligns his account with constructivism, claiming that value is constructed through these formal conditions, chiefly universalisability. In this paper, I employ a variant of Hegel’s empty-formalism objection to challenge the moral significance of the mere form of practical knowledge. I hope to show that Engstrom’s constructivism is neither (...) philosophically compelling, nor required by the rest of his position. In its place, I propose a realist understanding of the value of practical knowledge. (shrink)

Most accounts of Kant's epistemology focus narrowly on cognition and knowledge . Kant himself, however, thought that there are many other important species of assent : opinion, persuasion, conviction, belief, acceptance, and assent to the deliverances of common sense. ;My goal in this dissertation is to isolate and motivate the principles of rational acceptability which, for Kant, govern each of these kinds of assent, instead of focusing merely on cognition and knowledge. Some of the principles apply in (...) the context of everyday assent-formation; others apply in more specific contexts . ;The project is worthwhile for at least two reasons. First, it highlights issues that are both neglected in the literature and yet crucial for understanding Kant's famous claims about the nature and limits of our epistemic access to appearances and things-in-themselves. ;Second, it lays out Kant's sophisticated and largely plausible account of our intellectual obligations and of the various roles that "subjective" considerations play in our practices of assent-formation. Kant charts a viable middle course between the epistemic abstemiousness of Cliffordian evidentialists and the epistemic excess of Jamesian pragmatists. ;I begin with an overview of Kant's pre-critical epistemology, and then provide a broad survey of the ethics of assent in the critical period, noting in particular the way Kant allows for exceptions to his First Principle---the principle that it is rational to assent to proposition only on the basis of sufficient objective grounds. Having sketched the whole picture, I turn to the principles governing knowledge and use a new account of Kant's concepts of objective and subjective justification to solve a perennial interpretive problem regarding the nature of our epistemic access to material objects. I go on to examine Kant's theory of belief ; my central claim there is that Kant is much more liberal regarding belief about things-in-themselves that is based on theoretical grounds than most commentators think. Finally, I consider a number of objections to my "Liberal" interpretation of Kant's ethics of assent, and conclude with a meditation on Kant's view of enlightenment. (shrink)

In this paper I defend three different points: first, that the concept of highest good is derived from an a priori but subjective argument, namely a maxim of pure practical reason; secondly, that the theory regarding the highest good has the validity of a practical regulative knowledge; and thirdly, that the practical regulative knowledge can be understood as the same “holding something to be true” as Kant attributes to hope and believe.

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)

This volume of new essays provides a comprehensive and structured examination of Kant's justification of norms, a crucial but neglected theme in Kantian practical philosophy.

Daniel Garber has put forward an argument that aims to show that Kant’s understanding of Leibniz’ metaphysics should be discounted because he could only have had access to a small and narrow sample of Leibniz’ works from around 1710–1714. In particular, Garber argues that as Kant could not have read Leibniz’ correspondence with Arnauld or his correspondence with Des Bosses he could not have had an adequate conception of Leibniz’ understanding of the relation between substance and body. I will show (...) that Kant could have read some of the Arnauld correspondence and practically all of the Des Bosses correspondence, as well as a number of other related texts that are important for understanding Leibniz’ metaphysics, over a decade before writing the Critique of Pure Reason. Garber’s historical-textual argument for dismissing Kant’s account of Leibniz’ metaphysics is therefore seriously misleading. (shrink)

The subject matter of Ward’s book is Kant’s view of the nature of morality. Its object is to show that there is a development in Kant’s view, not only from the precritical to the critical stage of his thought, but also within the critical stage of his thought. The occasion for writing this book, it should be noted, is the prevalence of "verdicts" regarding Kant’s view of the nature of morality formed by British scholars on the basis of an acquaintance (...) of only the major critical works of Kant. According to Ward, an adequate understanding of Kant’s view of the nature of morality can come only from a reading of all of Kant’s works, most especially from a reading of his final, posthumously published, notes. In these notes, Kant equates God with practical reason. The significance of this equation is that it finally provides a stable solution to the problem of the foundations of morality, a problem which had occupied Kant since the beginning of his philosophical career. Kant’s precritical works, as well as the critiques, provide only unstable solutions. In his pre-critical works, Kant oscillates between seeking the foundations in knowledge and feeling. In his critiques, Kant seems to find a stable solution by conceiving reason as the source of principles, both theoretical and practical. The instability of this solution lies in the fact that Kant retains, along with the formal principles, a morality the source of which is religion. In the critiques, however, Kant is unable to conceive religion as anything more than a supplement to morality. Not until his final notes, Ward argues, does Kant recognize this instability and rectify it by giving religion an integral place in his conception of morality.—W. A. S. (shrink)

Karl Ameriks here collects his most important essays to provide a uniquely detailed and up-to-date analysis of Kant's main arguments in all three major areas of his work: theoretical philosophy (Critique of Pure Reason), practical philosophy (Critique of Practical Reason), and aesthetics (Critique of Judgment). Guiding the volume is Ameriks's belief that one cannot properly understand any one of these Critiques except in the context of the other two. The essays can be read individually, but read together (...) they offer a comprehensive guide to the main themes of the most influential of all modern philosophical systems. (shrink)

In opposition to Aristotle, for whom practical reason differs from theoretical reason solely in the end toward which it directs its theoretical knowledge, Kant means by practical reason the capacity to determine an act unconditionally, that is, freely. Since the Kantian doctrine of determinants is based on a conception of mutual relation between practical reason and volition, this study traces the development, progressive clarification, and precise result of his thought from the Grundlegung zur Metaphysik der Sitten (...) to the Metaphysik der Sitten.... Identification of practical reason with the will in the notion of autonomy guides research on the objective determining ground.... The article investigates the source from which Kant derived his notion of a determining ground and the role which analogy to natural activity played in its development [abr, tr fr j by PCS]. (shrink)

Among Immanuel Kant's most influential contributionsto philosophy is his development of the transcendental argument. InKant's conception, an argument of this kind begins with a compellingpremise about our thought, experience, or knowledge, and then reasonsto a conclusion that is a substantive and unobvious presupposition andnecessary condition of this premise. The crucial steps in thisreasoning are claims to the effect that a subconclusion or conclusionis a presupposition and necessary condition of a premise. Such anecessary condition might be a logically necessary (...) condition, butoften in Kant's transcendental arguments the condition is necessary inthe sense that it is the only possible explanation for the premise,whereupon the necessity might be weaker than logical. Typically, thisreasoning is intended to be a priori in some sense, eitherstrict or more relaxed. The conclusion of the argument is often directed againstskepticism of some sort. For example, Kant's Transcendental Deductiontargets Humean skepticism about the applicability of a priorimetaphysical concepts, and his Refutation of Idealism takes aim atskepticism about external objects. These two transcendental argumentsare found in the Critique of Pure Reason, butsuch arguments are found throughout Kant's works, for example inthe Critique of Practical Reason, in the Critiqueof the Power of Judgment, and in the OpusPosthumum. This article focuses on theTranscendental Deduction, the Refutation of Idealism, and more recenttranscendental arguments such as P. F. Strawson's that areinspired by these two examples. (shrink)

A reprint of the Macmillan edition of 1968. While most interpretive studies of the _Critique of Pure Reason_ are either too scholarly or too superficial to be of practical use to students, Hartnack has achieved a concise comprehensive analysis of the work in a lucid style that communicates the essence of extraordinarily complex arguments in the simplest possible way. An ideal companion to the _First Critique_, especially for those grappling with the work for the first time.

The papers in this volume are offered in celebration of the 200th anni versary of the pub 1 i cat i on of Inmanue 1 Kant's The MetaphysicaL Foundations of NatupaL Science. All of the es says (including the Introduction) save two were written espe ci ally for thi s volume. Gernot Bohme' s paper is an amended and enlarged version of one originally read in the series of lectures and colloquia in philosophy of science offered by Boston University. (...) My own paper is a revised and enlarged version (with an appendix containing completely new material) of one read at the biennial meeting of the Philosophy of Sci ence Association held in Chicago in 1984. Why is it important to devote this attention to Kant's last published work in the philosophy of physics? The excellent essays in the volume will answer the question. I will provide some schematic com ments designed to provide an image leading from the general question to its very specific answers. Kant is best known for hi s monumental Croitique of Pure Reason and for his writings in ethical theory. His "critical" philosophy requires an initial sharp division of knowledge into its theoretical and practical parts. Moral perfection of attempts to act out of duty is the aim of practical reason. The aim of theoretical reason is to know the truth about ma terial and spiritual nature. (shrink)

An essay on Kant's theory of justification, where by “justification” is meant the evaluative concept that specifies conditions under which a propositional attitude is rationally acceptable with a moderate-to-high degree of confidence. Kant employs both epistemic and non-epistemic concepts of justification: an epistemic concept of justification sets out conditions under which a propositional attitude is rationally acceptable with a moderate-to-high degree of confidence and a candidate (if true and Gettier-immune) for knowledge. A non-epistemic concept of justification, by contrast, (...) sets out conditions under which attitudes are rationally acceptable with a moderate-to-high degree of confidence but not candidates for knowledge (even if true). The latter conditions will typically be “pragmatic” or “practical,” and thus license acceptance from a “practical” point of view. For Kant, only broadly-speaking practical reasons can provide adequate motivation for adopting a positive attitude towards a proposition (rather than suspending judgment) in the absence of sufficient epistemic grounds. -/- . (shrink)

Henry Allison is one of the foremost interpreters of the philosophy of Kant. This new volume collects all his recent essays on Kant's theoretical and practical philosophy. All the essays postdate Allison's two major books on Kant, and together they constitute an attempt to respond to critics and to clarify, develop and apply some of the central theses of those books. Two are published here for the first time. Special features of the collection are: a detailed defence of (...) the author's interpretation of transcendental idealism; a consideration of the Transcendental Deduction and some other recent interpretations thereof; further elaborations of the tensions between various aspects of Kant's conception of freedom and of the complex role of this conception within Kant's moral philosophy. (shrink)

It is largely agreed that if constructivism contributes anything to meta-ethics it is by proposing that we understand ethical objectivity “in terms of a suitably constructed point of view that all can accept” (Rawls 1980/1999: 307). Constructivists defend this “practical” conception of objectivity in contrast to the realist or “ontological” conception of objectivity, understood as an accurate representation of an independent metaphysical order. Because of their objectivist but not realist commitments, Kantian constructivists place their theory “somewhere in the space (...) between realist and relativist accounts of ethics” (O’Neill 1988: 1). Furthermore, they argue that their practical conception of objectivity succeeds in making sense of certain features of morality, such as its categorical authority and its relation to rational agency, which escape rival theories (Korsgaard 1996b, Korsgaard 2003b). To this extent, constructivism claims a privileged place in meta-ethics. The legitimacy of this claim is widely challenged. Precisely because of its practical conception of objectivity, many – including some constructivists — regard constructivism as a first-order normative theory, rather than as a meta-ethical position, hence not on a par with realism. Some critics object that constructivism fails to offer a distinct meta-ethics because it is structurally incomplete and thus must be combined with a fully-fledged meta-ethics (Hussain and Shah 2006); others argue that it tacitly relies on realism (Timmons 2003; Shafer-Landau 2003; Larmore 2008). Thus far, the debate about the prospects of constructivism as a meta-ethical theory has been driven by the conviction that the case for or against constructivism depends on its ontological commitments. In this chapter, I propose a change in perspective. My aim is to defend constructivism as an objectivist account of practical knowledge. Its defining feature is the claim that practical knowledge is knowledge by principles. Its task is to establish a constitutive relation between knowledge of oneself as a practical subject and knowledge about what one ought to do. By focusing on the issue of practical knowledge I hope to show that the difficulty in situating Kantian constructivism firmly on the meta-ethical map, along with other meta-ethical theories, reflects ambiguities and oscillations about the practical significance of ethics. Even though the term is ambiguous, I retain the qualification “Kantian” for the constructivist theory I outline, and for two reasons. First, while the theory I outline differs from current agnostic or anti-realist variants, it is closer to its origins, since Kant treats practical reason as a cognitive capacity and takes moral judgments to be objective moral cognitions, which importantly differ from other sorts of rational cognitions because they bind us in the first person. Practical cognitions are common knowledge because they are such that all subjects endowed with rationality can arrive at them by reasoning and find them authoritative. Thus understood, Kantian constructivism carves a distinct logical space in the meta-ethical debate that other sorts of constructivism fail to identify. This is the second reason for keeping the qualification “Kantian”. On this formulation, constructivism is antagonistic to non-cognitivist theories denying that moral judgments have cognitive contents, because they deny that there is something to be known; but it is also a rival to cognitivist theories denying that knowledge can be practical in itself. How constructivism differs over the realist theories of practical reason is the least understood aspect of this debate. This essay aims to make the case that practical reason is both discursive and emotional. In contrast to foundational and anti-realist accounts of practical reasoning, it attempts to show that the moral feeling of respect plays a cognitive but non-evidential role in the account of the cognitive and practical powers of reason. The argument proceeds as follows. In section 1, I consider some prominent constructivist arguments against the model of applied knowledge and show that they are driven by non-cognitivist assumptions about the practicality of ethics and the legitimacy of epistemological claims. In section 2, I argue that these arguments do not succeed in disposing of the idea of practical knowledge as incoherent, because they trade on an ambiguity regarding the proper object of practical knowledge. To solve this ambiguity, I turn to Anscombe’s contrast between “practical” and “speculative” knowledge as models for understanding action. I thus suggest that Anscombe’s account of practical knowledge as knowledge of oneself as an agent is an important resource for Kantian constructivism. This finding prompts us to reset the current dispute about the ontological and epistemological commitments of Kantian constructivism, as illustrated in section 3. While constructivism does not postulate any moral ontology prior to reasoning, it attributes to reasoning the cognitive powers to establish a distinctive relation between the agent and her action. The task of sections 4-7 is to account for the distinctive features of Kantian constructivism understood as an objectivist account of practical knowledge. In section 4, I argue that in order for reasoning to accomplish its normative tasks, it should be conceived as a self-legislating activity. I respond to some objections to the idea of self-legislation as the form of rational willing by offering a dialogical view of practical reason. In section 5, I propose a non-standard interpretation of Kant’s argument of “the fact of reason” to show that the constructivist account of self-legislation does not build on realism about value, as its detractors claim. The “basis of construction” is the subjective experience of respect for the self-legislative capacity itself. This moral feeling conveys our awareness of rational agency and shows our responsiveness to the demands of practical reason. It is an emotional mode of practical knowledge of oneself as an agent (in the sense specified in section 2), but not as a mode of moral discernment. In section 6, I show how practical knowledge of oneself as an agent relates to practical knowledge about what one ought to do. I thus account for the relation between respect as emotional moral consciousness and respect as a deliberative constraint. Finally, in section 7, I reply to the objection of subjectivism. I explain how the complex sort of objectivity that Kantian constructivism affords is at the same time more ambitious and more modest than is generally assumed. (shrink)

A testimony is somebody else’s reported experience of what has happened. It is an indispensable source of knowledge. It only gives us historical cognition, however, which stands in a complex relation to rational or philosophical cognition: while the latter presupposes historical cognition as its matter, one needs the architectonic “eye of a philosopher” to select, interpret, and organize historical cognition. Kant develops this rationalist theory of testimony. He also practices it in his own work, especially while theorizing about race (...) as a subject of natural philosophy. In three dedicated essays on this subject, he treats race from the standpoint of a philosophical investigator of nature (Naturforscher), who (as Kant puts it in the first Critique) learns from nature “like an appointed judge who compels witnesses to answer the questions he puts to them.” This view underwrites Kant’s use of travel reports (a type of testimony) in developing and defending his theory of race. (shrink)

The article analyzes the metaphor “Copernican revolution,” used by Kant to highlight the core idea of his philosophy. The author argues that Kant uses the analogies with mathematics and natural science for establishing criteria of scientific character of knowledge. These criteria include the hypothetic-deductive or a priorimethod of thinking, which determines the apodictic, i.e. necessary and objective, character of the basic laws of nature, as well as the verification of laws a priorithrough experiments.The author focuses on Kant’s idea of (...) the possibility of scientific metaphysics based on these criteria. She claims that the structure of scientific metaphysics and the epistemological status of its statements depend on what kind of objects it deals with: with phenomena given to us by sensuality, with only conceivable “things in themselves” or with supersensitive “objects of an idea.” In the last part, the author interprets the meaning of the metaphor “Copernican turn” as the upgrading of logic, the idea of “transcendental idealism” and discusses the possibility of using the metaphor “Ptolemaic system” to characterize the practical philosophy of Kant. (shrink)

The secular interpretation of Kant is widespread and Kant is viewed as the most prestigious founding father of liberal secularism. At the same time, however, commentators note that Kant’s position on secularism is in fact much more complex, and some go as far as to talk about an ambiguous secularism in his work. This paper defends a refined version of the secular interpretation. According to this refined version, Kant can offer a limited, political secularism on the basis of a simple (...) argument which focuses on the distinct epistemic statuses of political and religious claims; however, the paper argues, a more general secularism is unwarranted on the basis of the same argument. If my argument is correct, then it will account at least in part for the plurality of interpretations. Moreover, any further attempt to show that Kant’s relation to secularism is ambiguous or dismissive should take into consideration the argument from epistemic grounds presented here. (shrink)

This volume sheds new light on Immanuel Kant’s conception of anthropology. Neither a careful and widespread search of the sources nor a merely theoretical speculation about Kant’s critical path can fully reveal the necessarily wider horizon of his anthropology. This only comes to light by overcoming all traditional schemes within Kantian studies, and consequently reconsidering the traditional divisions within Kant’s thought. The goal of this book is to highlight an alternative, yet complementary path followed by Kantian anthropology with regard to (...) transcendental philosophy. The present volume intends to develop this path in order to demonstrate how irreducible it is in what concerns some crucial claims of Kant’s philosophy, such as the critical defense of the unity of reason, the search for a new method in metaphysics and the moral outcome of Kant’s thought. (shrink)

O postulado prático da existência de Deus é problemático por várias razões: primeiro, Kant nega que ele proporciona qualquer cognição da natureza ou existência de Deus como um ser em si; segundo, ele salienta a natureza prática do postulado contribuindo para o desempenho de nossos deveres; e, terceiro, Kant parece mesmo algumas vezes indicar que nosso postulado de Deus não corresponde a nenhuma realidade, mas é um mero pensamento. No meu trabalho, eu sustento o argumento que o postulado de Kant (...) de Deus pode ser melhor entendido como um conceito sem extensão que serve para unificar vários outros conceitos e obrigações morais mas que ele próprio não tem referência. Eu sustento esse argumento apontando para a relação do postulado para o propósito da filosofia prática, em oposição à teórica e pelo exame da função regulativa da razão em geral e invocando a teologia construtivista contemporânea. A fim de mostrar este ponto eu primeiro analiso a natureza de um postulado comparando postulados a hipóteses transcendentais e crenças da Crítica da Razão Pura. Em segundo lugar, eu examino o uso que Kant faz do postulado da existência de Deus como sendo “imanente... para propósitos práticos” e “somente em referência à lei moral e em função dela” na Crítica da Razão Prática. Terceiro, eu procuro pela função que o postulado de Deus desempenha no Opus Postumum e em outros textos de 1790 para mostrar que Kant chegou mais e mais a argumentar pelo papel funcional ao invés do referencial desse postulado. Ao longo do trabalho, eu discuto a natureza da filosofia prática – direcionada ao uso livre das nossas vontades – como sendo distinta da filosofia teórica – dirigida ao conhecimento dos objetos. Eu mostro como essa solução pode fazer Kant um naturalista metafísico. Eu também entro em questões contemporâneas da teologia relacionadas com o papel humano na construção de sistemas conceituais para ajudá-los a fazer sentido ao mundo que eles experienciam no contexto de um mistério maior que desafia a conceitualização.Kant’s practical postulate for the existence of God is puzzling for several reasons: first, he denies that it provides any cognition of the existence or nature of God as a being in itself, second, Kant stresses the practical nature of the postulate as contributing to performance of our duties, and third, Kant even seems on occasion to indicate that our postulate of God does not correspond to any reality but is a merely a thought. In my paper I advance the argument that Kant’s postulate of God is best understood as an extensionless concept that serves to unify various other moral concepts and moral obligations but that has no referent itself. I make this argument by noting the relation of the postulate to the purpose of practical, as opposed to theoretical, philosophy, and by examination of the regulative role of reason in general, and by invoking contemporary constructivist theology. In order to show this point I first examine the nature of a postulate by comparing postulates to transcendental hypotheses and to beliefs from the Critique of Pure Reason. I second examine the use to which Kant puts the postulate of the existence of God as “immanent . . . for practical purposes” and “only in reference to the moral law and for the sake of it” in the Critique of Practical Reason. Third, I look at the role that the postulate of God plays in Kant’s Opus Postumum and other texts from the 1790s to show that Kant came more and more to argue that the postulates have this functional rather than referential role. Throughout the paper I discuss the nature of practical philosophy – directed toward the free use of our wills – as distingushed from theoretical philosophy – directed toward knowledge of objects. I note how this solution could make Kant a metaphysical naturalist. I also touch on contemporary issues in theology related to the role of human construction of systems of concepts to help them make sense of the world they experience in the context of a greater mystery that defies conceptualization. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Kant’s Worldview: How Judgment Shapes Human Comprehension by Rudolf A. MakkreelRiccardo PozzoRudolf A. Makkreel. Kant’s Worldview: How Judgment Shapes Human Comprehension. Evanston, IL: Northwestern University Press, 2021. Pp. 284. Hardback, $99.95. Paperback, $34.95.This is the last book Rudolf Makkreel published before passing away in October 2021. No wonder, then, that it makes some strong points, one of which is truly fundamental: the time has come to recognize the (...) expediency of reading Kant along with Dilthey for a better understanding of the workings of human comprehension. Makkreel maintains that Kant endorsed “a more inclusive idea of philosophizing according to a world-concept (Weltbegriff ),” for Kant had realized that, because reason cannot simply extrapolate from the ways in which the understanding proceeds to a determinate lawful order, it is necessary to tame the speculative projections of reason by our own powers of orientation and judgment. Hence, Makreel concludes that “the overall worldview we can actually arrive at will need [End Page 511] to include supplementary modes of organizational order that are not determinant but reflective” (3).Throughout the book, Makkreel is pleading for Kant scholars to acknowledge the heuristic value of a set of concepts whose philosophical effectiveness has been to date underestimated. Readers will find many convincing analyses of the lexical cloud around judgment: determining judgment (bestimmende Urteilskraft) against reflecting judgment (reflektierende Urteilskraft) in its connection with the Weberian distinction between explaining (Erklären), understanding (Verstehen), and comprehending (Begreifen). What is at stake in contrasting the last two, understanding and comprehension, insists Makkreel, is the scope of what humans can claim to know, for while it is important to base knowledge claims on the empirical understanding, we must remain open to what could lie beyond the horizon of sense. Hence, critical philosophy is there to supplement “the limits of actual geographical” surveys of the earth with the “boundaries of all possible descriptions of the earth” (KrV A 759/B 787), whereby limits (Schranken) are negative empirical markers that do not take into account what could be beyond them, while boundaries (Grenzen) are positive markers that “presuppose a space existing outside a certain definite space and enclosing it” (Prolegomena, AA 4:352). Makkreel suggests we can infer that whereas earthly limits are imposed from without, worldly boundaries are in some sense self-imposed. Earthly limits would act as external negative restraints on the understanding, while worldly bounds work as internal positive constraints on reason as it attempts to comprehend both what we can and cannot know. Comprehension, argues Makkreel, can be “shown to be a mode of reason whose bounds must be judgmentally self-binding” (14).Let me take a step back. Makkreel intends to show that the task of understanding in its relation with comprehension is what we need to provide an overall characterization of Kant’s philosophical project. This is a bold stance, given Kant’s argument that the faculty of understanding (Verstand) proceeds discursively, namely one step at a time, which makes the project of a more holistic comprehension (Begreifen) highly problematic. However, Makkreel notes that if it is true that “concepts of reason serve for comprehension” (KrV A 311/B 367), it is also true they are purely inferential and at times sophistical (13). To help define what Kant ends up meaning by ‘comprehension,’ Makkreel provides exhaustive references to important discussions about this notion in Kant’s Lectures on Logic and the Critique of Judgment (40–46).Here comes to the foreground the notion of worldview (Weltanschauung) that stands alone in the title of his book. It is in the context of his discussion of the mathematical sublime that Kant broached the idea of an overall “worldview [Weltanschauung]” (KU AA 5:255), which nineteenth- and twentieth-century philosophers (e.g. Hegel, Dilthey, and Jaspers) took to denote a common or generic outlook on life. For Makkreel, though, ‘worldview’ designates a comprehensive way of characterizing Kant’s distinctive philosophical project (13).As I said above, this is a bold stance. While the first part of the book focuses on philosophizing according to a world-concept, the second part turns to our practical concerns as we act in the world. In... (shrink)

In my original confrontation with Kant’s first Critique, although essentially sympathetic with its import, I found myself deploring his use of certain expressions such as “things in themselves,” “noumena,” “intuitive understanding,” “supersensible,” etc. It seemed to me that he could have made his basically positivistic point without calling up vestiges of absolute realities or eternal verities. When I turned to his second critical enterprise, it sometimes seemed as if he were letting God, freedom, and immortality step in the philosophical back (...) door, warranted by the rather vague argument of the transcendental deduction of the moral law which supposedly provided “practical reality” for the transcendental ideas of pure reason. My puzzlement was compounded by his need for a practical “typik” and the notion that practical reason somehow required the realization of unconditional moral ideals in the conditioned sensible world. Perhaps somewhat like Kant himself, I felt that something was missing. There was a kind of gap or void which needed filling in by something which would not only dispel any reservations about some of the language of the first two Critiques, but would also interrelate the two independent realms of nature and freedom in some intelligible way such that any suspicions of a philosophically irreducible dualism could be erased, while still recognizing theory and practice as autonomous functions of the single faculty of intelligence. But what kind of “unity” could we expect? Although the two analyses were logically compatible, each seemed to stand on its own and there was no mutual implication between them. It was as if each went wrong not in respect to its own foundation but in respect to what it said about the other. Kant presents a defensible theory of knowledge which says some very strange things about logically possible, nonempirical entities; and then this is followed by a systematic ethical theory which occasionally makes odd assertions about empirical nature. (shrink)

The standard account of Kantian moral weakness fails to provide a psychologically realistic account of moral improvement. It assumes that moral strength is simply a matter of volitional resolve and weakness is a lack of resolve. This leaves the path to moral improvement unclear. In this paper, I reconstruct an alternative character-based account of Kantian moral weakness and strength. On this account, moral strength is the possession of sympathy and self-knowledge, key practical-epistemic virtues from Kant’s Doctrine of Virtue, (...) and moral weakness is a lack of these virtues. This identifies moral strength with a high degree of development, integrity, or fitness in one’s character, and not merely an ability to somehow try harder. It also resolves an exegetical puzzle concerning the change of heart in Kant’s Religion Within the Boundaries of Mere Reason. (shrink)

This book provides a unique perspective on the philosophy of Immanuel Kant, one of the most important figures in the history of Western thought. The author argues that Kant's ideas can be understood in terms of their practical implications, rather than as abstract concepts divorced from concrete experience. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public (...) domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

Although the name of Immanuel Kant has survived in the history of culture as the name of one of the greatest philosophers of modern times, Kant's role as a scientist is also very important. His work in the field of cosmology and physics is directly related to philosophy. Kant's development of the transcendental method was a direct result of thinking about the relationship between mathematics and experiment. Transcendentalism and Kant's theory of subjectivity continue the development of physics (...) from Galileo to Newton and Leibniz. This is especially true of his theory of space and time. All this should have turned transcendental aesthetics into a turning point in the development of mathematical natural science. However, in practice, the alienation of the natural sciences from philosophy has only intensified. An analysis of the scientific revolution at the beginning of the 20th century shows the enormous role of Kant's ideas in it in repulsing scientists from Kantianism. Weinert, a researcher of the relationship of 20th century physics to Kant's philosophy, shows that Einstein, being a Kantian as a philosopher, opposed Kantianism as a physicist. He enthusiastically accepted the Kantian idea of the autonomy of theoretical knowledge, but did not accept the concept a priori. An approach in which experience and theory do not precede each other, but are in constant interaction, is defined in the article as experimental transcendentalism. With the methodological difference between physics and philosophy, the concept of space and time in modern physics has a deep similarity with the transcendental doctrine. The definition of the qualitative structure of space (Analysis Situs), including the theoretical substantiation of its three dimensions, was the subject of reflections of scientists from Galileo, Leibniz and Kant to Einstein and Poincaré. (shrink)

Moral realism faces two worries: How can we have knowledge of moral norms if they are independent of us, and why should we care about them if they are independent of rational activities they govern? Kantian constitutivism tackles both worries simultaneously by claiming that practical norms are constitutive principles of practical reason. In particular, on Stephen Engstrom’s account, willing involves making a practical judgment. To will well, and thus to have practical knowledge (i.e., (...) class='Hi'>knowledge of what is good), the content of one’s will needs to conform to the formal presuppositions of practical knowledge. Practical norms are thus constitutive of practical knowledge. However, I will argue that the universality principles from which Engstrom derives the formal presuppositions of practical knowledge are reflectively and psychologically unavailable. As a result, they cannot help Kantian constitutivism provide an answer to moral realism's worries. (shrink)

In his original essay, The Form of Practical Knowledge, Stephen Engstrom argues for placing Kant’s ethics in the tradition of practical cognitivism. My remarks are intended to highlight the merits of his interpretation in contrast to intuitionism and constructivism, understood as ways of appropriating Kant’s legacy. In particular, I will focus on two issues: first, the special character of practical knowledge—as opposed to theoretical knowledge and craft expertise; and second, the apparent tension between the (...) demands of morality and the requirements of instrumental reason, when this is understood as driven by concerns for happiness, prudence, and personal integrity. (shrink)

Kant's account of aesthetic value is easily ignored or subordinated by the recent stress on the primacy of the practical in his system. For Kant, vindicating reason not only requires a methodological distinction between principles of thought and knowledge on the one side, and of action and morality on the other, but the introduction of a third "faculty," feeling, along with its own principle of judgment. Christine Korsgaard has interpreted Kant's overall account of rationality in terms (...) of a kind of rationalist constructivism, the spirit of which she traces to his humanism. She argues that, for Kant, the source of all value is ultimately humanity itself, or, to be more precise, humanity insofar as it is capable of full rational autonomy. Kant's own statement of the primacy of practical reason turns out to be far from clear. (shrink)

Konstantin Pollok's ambitious aim in this book is to formulate a unified theory of normativity that runs throughout Kant's three Critiques. Specifically, he argues that, on Kant's view, synthetic a priori principles structure "the space of reason" and determine the validity of our judgments. Such principles are constitutive of our epistemological, ethical, and aesthetic practices by setting the conditions for what makes a meaningful judgment in those areas, but they are also normative in that the particular judgments we (...) make can be right or wrong depending on whether we successfully apply the principles. For example, to be making knowledge claims, we must use the pure concepts of the understanding to interpret our... (shrink)

This accessible and practical edition of Kant's best introduction to his own work is designed especially for students. Assuming no prior knowledge of the Prolegomena, esteemed scholar Gunter Zoller provides an extensive introduction that covers Kant's life, the origin and reception of the Prolegomena, the organization of the work, its principal arguments, and its philosophical significance. Detailed notes, a chronology, a glossary, an annotated bibliography, and two reviews of the Critique of Pure Reason--which establishes the specific (...) intellectual background of the Prolegomena--are also included. (shrink)

Immanuel Kant’s Observations on the Feeling of the Beautiful and the Sublime is examined in the context of the emergence of the epistemological practice of scientific observation. By focusing on the genre-stylistic and semantic-structural features of the text the authors demonstrate the mechanisms of observation as well as the methods of describing the results characteristic of mid-eighteenth century science. The authors consider Kant’s treatise to be a hybrid text: on the one hand, it attests to the importance of the natural (...) science paradigm and the degree of its influence on the humanities in the modern period; and, on the other hand, it bears witness to the multi-genre character of philosophical treatises, combining as they do the considered and serious wisdom of philosophy, the precision of scientific terminology and the figurativeness of a work of fiction. Kant is perceived not only as a researcher and philosopher capable of bringing out the essence of the particular and changeable captured in observation, but as a writer with a consummate command of the apparatus for keeping the reader’s attention through linguistic devices and practices of image-creating. The authors demonstrate how the categories of the “beautiful” and “sublime” become a general framework for the description of the moral and mental properties of human nature. The authors show that Kant’s use of “aesthetic” wording in the title of his treatise does not announce that his aim is analysis of artistic perception and practices, but mainly refers to the form of his anthropological study and conceptualisation of scientific knowledge. Kant has transferred the technique of visualisation from natural sciences to the objects of philosophical inquiry, thus contributing to the development in the humanities of representative practices, the scientific method of observation as well as the corresponding epistemic and literary genre. (shrink)

Robert B. Louden has produced a book that is unique in its attempt to make a wide variety of Kant’s writings relevant to his ethical theory. The main point of the book is that in addition to Kant’s moral theory which is purely based on reason, the application of this theory requires empirical and hence impure knowledge of human beings. Kant calls the empirical part of his ethics “practical anthropology” and Louden believes that, though Kant did not complete (...) this project as a separate book, the elements of a practical anthropology can be “squeezed out” of Kant’s works on education, anthropology, art, religion, and history. (shrink)

From this summary account of the deduction we can draw a number of conclusions: In the first place, the guiding thesis used to make sense of the argument was that the argument needed to ground not just the moral law but a cognitive framework within which the moral law is the highest law. This distinction is important since it allows us to distinguish in the practical philosophy (as in the theoretical) a level of transcendental argumentation from a level of (...) metaphysical argumentation: The concern of transcendental philosophy would be to establish the conditions of the possibility of a cognitive framework, whereas the concern of metaphysics (in Kant's sense) is to develop the principles of a given cognitive framework and to derive from them knowledge of objects (see KU, Introduction, Section V). (This distinction turns out to be invaluable in dealing with the problem of the “application” of the moral law.)In the second place, this interpretation allows us to avoid reducing the practical viewpoint to the status of a poor imitation of “real” knowledge, one whose inadequacies must be passed over in embarrassed silence for the sake of rescuing morality. If the argument is correct, practical knowledge is in one sense more firmly grounded than (and even subsumes) theoretical knowledge, even though its grounds do not allow of complete insight.And, finally, we can make at least some cautious generalizations about Kant's understanding of a transcendental argument. Two things in particular seem to characterize the deduction: (1) It is essential that the argument is concerned with a cognitive framework rather than with any specific knowledge within that framework; it is the possibility of knowledge at all that is in question, and it is that fact that requires a special kind of argument. (2) Kant's assumptions about the distinct roots of human knowledge are indispensable to the argument. The distinction between mere speculation (mere thinking, which requires only our rational faculties) and knowledge (which also requires sensibility) is essential: Without that distinction we cannot understand why the argument is necessary in the first place (since, as I argued above, we cannot see how the moral law is synthetic), nor can we understand what it means to ground a cognitive framework: Grounding a cognitive framework for Kant has turned out to involve showing how two irreducibly distinct faculties can cooperate in acts of cognition - here it is the faculty of desire and the pure will which are conceptually irreducible and for which grounds of a possible a priori unity must nevertheless be given. The fact that these two features are so central to the argument would indicate that they should be taken into consideration in any discussion of transcendental arguments framed along Kantian lines. (shrink)

Elaborating on the substantial parallels between Molina’s and Kant’s attempts to reconcile human freedom with divine foreknowledge and natural causal determinism respectively, my aim is to establish a proper historical connection as well. Leibniz is shown to be the crucial mediator in two respects: (i) Kant knew Molina’s account of divine knowledge in general in its Leibnizian version through Baumgarten’s Metaphysica. In this work, scientia media plays no role in the explication as to how God knows absolute future contingents. (...) (ii) In the Critique of Practical Reason Kant resorted to doctrines similar to Molina’s in his criticism of Leibniz’s alternative explication which drew on complete concepts of monads. (shrink)

Immediate (non-Reflective) experience must be distinguished from mediate experience (empirical knowledge). Kant's epistemology is based on the "a priori"--"a posteriori" and analytic-Synthetic distinctions. Four classes of knowledge arise out of combining these two distinctions; each corresponds to a 'reflective perspective'--A way of reflecting upon immediate experience. Reflection based on transcendental, Logical, Empirical or practical perspectives gives rise, Respectively, To knowledge which is synthetic "a priori", Analytic "a priori", Synthetic "a posteriori", Or analytic "a posteriori".

In lieu of an abstract, here is a brief excerpt of the content: Kant's Tribunal of Reason: Legal Metaphor and Normativity in the Critique of Pure Reason. Cambridge: Cambridge University Press, 2020. Pp. 208. Hardback, $105.00. -/- Even those with a passing knowledge of Kant's system will recognize his sustained use of legal metaphor and his appeal to lawfulness as a beacon of philosophical progress. He famously begins one of the most important (and impermeable) sections of the (...) Critique of Pure Reason with the juridical distinction between quid juris (what is the law) and quid facti (what is the fact) (A 84/B 116), insisting—against the empiricists—that the critique of our cognitive faculty must speak to the former and requires a Transcendental Deduction of the categories. In her book, Sofie Møller delves into the historical context and philosophical significance of such legal metaphors to reveal that their roots spread to the deepest foundations of Kant's project. In doing so, she contends that we should understand "philosophical systematicity as legal systematicity" (15). According to Møller, to accept this reading of Kant is to acknowledge that the legal system provides not just one helpful type of metaphor to be appreciated alongside many others, but the only proper symbol of the abstract nature of reason itself (173).For those interested in Kant's engagement with the natural-rights theory that prevailed during his lifetime, or in his familiarity with the concrete legal practices of eighteenth-century European courts, Møller's book proves to be thoroughly researched and informative. As the first English-language book-length study providing a comprehensive account of the legal aspects influencing Kant's system, it should serve as a valuable catchall resource. There are limits to its accessibility, however, as familiarity with basic legal distinctions—e.g. between civil and criminal codes—is assumed, and Latin terms and phrases often go untranslated. At times, this makes for a difficult intersection between the arduousness of Kant's own prose and the equally technical legal terminology that is meant to explain it. However, this barrier is mitigated by Møller's own interpretive work, which cautions that we should not let indeterminate legal terminology fix too much in our reading of Kant's texts, especially when considering the Transcendental Deduction and its reliance on the quid juris/quid facti distinction. As she concludes at the end of chapter 3, the procedure of legal deduction that Kant invokes "could be an investigation, an exposition, a thorough consideration, a review, explanation, description, account, dispute or procedure" (64). Thus, despite Kant's historically demonstrable familiarity with legal-deduction writings, on their own, they "do not present a sufficiently uniform argument structure to settle the question of the structures of the two versions of the transcendental deduction" (64). This observation serves both as a general warning as well as a criticism of Dieter Henrich's approach to Kant's system, which popularized attention to legal metaphor in Kant scholarship in the twentieth century. For Møller, little philosophical insight is won through Henrich's approach, since it "places too much weight on the importance of an origin" (60), taking its cue from a particular type of legal deduction whose assumption is unsupported, and which cannot be accurately projected onto Kant's text. As Møller argues, "The validity of the categories is not only grounded in their origin in pure apperception but in their being the necessary structures in the synthesis which creates objects of experience, which is an act of pure apperception" (60). Møller's suggestion, instead, is to read the Deduction as adopting the twofold structure of "judicial imputation," which does a more faithful job of capturing the structuring activity that Kant accords to the understanding. With the latter reading, emphasis shifts from whether the categories' application to objects of experience is valid because of their a priori origin, to the spontaneous activity of the judging subject as the originator of experience (75). Part of what is unique about this approach is that it does not read the... (shrink)

The aim of this paper is to determine whether Kant’s account of freedom fits with his theory of the human sciences. Several Kant scholars have recently acknowledged a tension between Kant’s metaphysics and his works on anthropology in particular. I believe that in order to clarify the issue at stake, the tension between Kant’s metaphysics and his anthropology should be broken down into three distinct problems. -/- First, Kant’s Anthropology studies the human being ‘as a freely acting being.’5 This approach (...) thus presupposes that such an inquiry can acknowledge freedom and appeal to it in its accounts of human behaviour. Yet the Critique of Pure Reason clearly asserts that ‘as regard [man’s] empirical character there is no freedom; and yet it is only in the light of this character that man can be studied.’ This, in contrast, seems to indicate that the human sciences should be carried out independently of freedom. -/- Second, the Anthropology seems to suggest that empirical factors encompassed by culture, civilisation and mores can have an impact on the human being’s moral status by generating some form of moral progress. Yet if freedom and moral agency are restricted to the domain of the intelligible, they cannot be influenced by anything empirical. -/- Third, the Anthropology provides numerous moral and prudential recommendations as to how one should behave in particular circumstances. Thus it seems to presuppose that anthropological knowledge, as well as the practical guidance based on this knowledge, can have an impact on the free choices we make. Yet how can the human sciences be legitimately, and efficaciously, prescriptive vis-à-vis our free choices? -/- Regarding the first problem, which I tackle in section I, I will hold that the human sciences can legitimately refer to ‘practical freedom’ understood as the power to determine one’s aims and to act independently of sensuous impulses, through intentions and the representation of purposes. I will address the second and third problems in two steps. Section II will tackle them negatively through a distinction between the conditions of moral agency and the conditions of moral improvement. It will allow me to argue that the possibility of any direct influence of the empirical on the intelligible is metaphysically invalid in principle, and hence, that empirical factors cannot effect any direct change in one’s moral character. In the third section, I will turn to the positive side of my account by focusing on the issue of the moral relevance of culture and civilisation as well as that of the human sciences (which study their influence), and suggest that they are morally relevant insofar as they make us more morally efficacious. (shrink)

In my dissertation, I argue that contemporary interpretive work on Kant's philosophy of geometry has failed to understand properly the diagrammatic aspects of Euclidean reasoning. Attention to these aspects is amply repaid, not only because it provides substantial insight into the role of intuition in Kant's philosophy of mathematics, but also because it brings out both the force and the limitations of Kant's philosophical account of geometry. ;Kant characterizes the predecessors with which he was engaged as agreeing (...) that mathematical judgments are analytic a priori. This is an inadequate account of geometrical judgments for Kant, because it cannot be reconciled with the evident success of the Euclidean practice in producing a priori knowledge of the nature of space. The ubiquitous presence of diagrams in Euclidean proofs suggests that, at least in Kant's time, any plausible account of the establishment of geometrical judgments must provide for the role of quasi-perceptual representations of individuals. Kant's claim that mathematical judgments are synthetic a priori reflects, in its positive aspect, his recognition of the importance of these 'intuitive' representations to Euclidean reasoning. Furthermore, Kant's doctrine that geometrical knowledge is established by the construction of concepts in intuition can be usefully understood as an attempt to accommodate the role of diagrams in the establishment of synthetic a priori geometrical judgments. ;Both Kant's rejection of the analytic a priori account of mathematics and his positive account of geometry depend on the plausibility of his appeals to Euclidean practice. Attention to the role of diagrams in Euclidean proof supports Kant's contention that intuitive representations are an essential component of Euclidean reasoning; however, the role of diagrams in both reductio proofs and in proofs by cases brings out tensions in Kant's positive account. The use of diagrams to represent impossible geometrical situations in reductio proofs indicates that Kant's notion of 'construction in intuition' can have a broader application than the construction of instances of geometrical concepts . Similarly, proofs by cases undermine Kant's attempts to explain the generality of judgments established through the consideration of individuals by appeal to the rules for the construction of those individuals. ;Contemporary interpretive debates about Kant's philosophy of geometry have centered on the philosophical role played by his appeal to intuition. This appeal cannot be primarily understood as an attempt to establish that the fundamental assumptions of Euclidean geometry are necessary truths about space. Nor can the role for intuition be regarded as merely licensing moves in geometrical proofs like an inference rule in modern logic. Instead, by understanding Kant's appeal to intuition as, at least in part, an attempt to accommodate the diagrammatic features of Euclidean reasoning, a much richer role for intuition is revealed. Intuition is required to play a logical role by expressing spatial relationships and establishing the existence of geometrical entities. In addition, it plays a quasi-perceptual role by supporting the truth of certain claims appealed to during the course of Euclidean proof. (shrink)

The central questions in this study are: What does Kant consider the essence of the dispute between Rationalists and Realist Empiricists which he titles the “Second Conflict of the Transcendental Ideas?” Why does he believe it supports such wider aims of the Critical Philosophy as: showing the impossibility of a Transcendental Realist explanation of the spatiotemporal world, which amounts to an indirect proof of Transcendental Idealism ; being the only means for detecting the transcendental illusion which leads to Transcendental Realism (...) and convincing us to give it up ); demonstrating the defeat of theoretical reason in its highest aim – the systematization of knowledge under one concept – thus turning us toward practical reason as the only venue where reason's demand for the unconditioned can be satisfied? (shrink)

It is argued that there is a plausible way to read Kant as consistently repudiating a two-worlds picture and upholding a de-reistic view whereby the transcendental object or thing in itself indicates only a pure concept of the understanding whose role is to govern the synthesis of any unified manifold. This reading of Kant liberates him from the well-known textual and philosophical difficulties of the two-worlds view. Furthermore, I argue that this interpretation leads to a strong idealist position as opposed (...) to the double-aspect view of Allison and Prauss. This idealist position was basically adopted by Fichte in his Introductions to the Science of Knowledge of 1797, wherein the debunking of the thing in itself was a crucial step in his ultimate argument for the unity of theoretical and practical reason. (shrink)

In this interesting and engaging book, Shabel offers an interpretation of Kant's philosophy of mathematics as expressed in his critical writings. Shabel's analysis is based on the insight that Kant's philosophical standpoint on mathematics cannot be understood without an investigation into his perception of mathematical practice in the seventeenth and eighteenth centuries. She aims to illuminate Kant's theory of the construction of concepts in pure intuition—the basis for his conclusion that mathematical knowledge is synthetic a priori. (...) She does this through a contextualized interpretation of his notion of mathematical construction, which she argues can be approached by looking at Euclid's Elements and Christian Wolff's mathematical textbooks. The importance of the former for her interpretation is justified by the fact that nearly all of Kant's mathematical examples in the Critique are Euclidean propositions. The importance of the latter is revealed through the fact that Wolff's textbooks were not only widely read and representative of the state of elementary mathematics during Kant's time; Kant was also intimately familiar with them. During the thirty years prior to the publication of the Critique, he used the textbooks in the college-level introductory courses in mathematics and physics that he taught.In the introduction to her book, Shabel helpfully distinguishes her approach to Kant's philosophy of mathematics from that of previous commentators. She points out that most commentators assessed Kant's thoughts on mathematics in terms of the ‘supposedly devastating effects of the discovery of non-Euclidean geometry on his theory of space’ .1 Bertrand Russell, for example, criticized Kant for his lack of a proper …. (shrink)