In the first part of the paper I reconstruct Kant’s proof of the existence of a ‘most real being’ while also highlighting the theory of modality that motivates Kant’s departure from Leibniz’s version of the proof. I go on to argue that it is precisely this departure that makes the being that falls out of the pre-critical proof look more like Spinoza’s extended natura naturans than an independent, personal creator-God. In the critical period, Kant seems to think that transcendental idealism (...) allows him to avoid this conclusion, but in the last section of the paper I argue that there is still one important version of the Spinozistic threat that remains. -/- . (shrink)

The subject of this article is Herder’s unique conception of the soul-body relationship and its divergence from and dependence on Leibniz. Herder’s theory is premised on a rejection of the windowlessness of monads in two important respects: interaction between material bodies (as gleaned from Crusius and Kant) and interaction between the soul and body. Herder’s theory depends on Leibniz insofar as it agrees with the intimate connection Leibniz posits between the soul and the body, as his epistemology demonstrates, with, however, (...) the significant modification that the connection is real. Herder transforms the Leibnizian rehabilitation and use of substantial forms to develop a double-conception of the human soul as both thinking substance and substantial form: the soul, qua thinking substance, needs a body through whose senses it can interact with, and acquire knowledge of, the external world; the soul, qua substantial form, constructs itself this material body by harnessing the forces of attraction and repulsion. Herder’s theory provides an alternative to other contemporary accounts of the soul-body relationship, especially Kant’s, which start from the problem of relating two distinct substances. His unique and original reconciliation of the modern dichotomy of spirit and matter, via his connecting of Leibniz’s realms of final and efficient causes, is of great significance for the rise of German Idealism. (shrink)

In the Critique of Pure Reason, following his elucidation of the ‘postulates’ of possibility, actuality, and necessity, Kant makes a series of puzzling remarks. He seems to deny the somewhat metaphysically intuitive contention that the extension of possibility is greater than that of actuality, which, in turn, is greater than that of necessity. Further, he states that the actual adds nothing to the possible. This leads to the view, fairly common in the literature, that Kant holds that all modal categories, (...) in their empirical applications, are coextensive. I diverge from the common view. First, Kant is not committed to the coextensiveness thesis, understood as above. Instead, he espouses a weaker, epistemological version of the coextensiveness thesis, namely that what we can assert to be really possible is coextensive with what we cognize to be actual. Second, Kant's remarks are not intended to introduce a positive ontological thesis about the extensions of modal categories. Rather, he means to criticize a certain conception of modalities that was prevalent among his rationalist predecessors, i.e., the conception of modalities as various determinations that enter the intensions of concepts of things. (shrink)

In this paper I argue that Kant’s psychology of moral motivation has less in common with Hutcheson’s view than interpreters have traditionally thought. I first offer an interpretation of the role that feeling, desire, and cognition play in Kant’s account of moral action. I then outline the essential features of Hutcheson’s understanding of desire before arguing that although Kant and Hutcheson share the trivial similarity that even moral action springs from a desire, Kant conceives of the desire at the root (...) of moral action as qualitatively different from all other desires in a number of important ways. (shrink)

In this paper, I consider Baumgarten’s views on the soul in the context of the Pietist critique of Wolff’s rational psychology. My primary aim is to account for the largely unacknowledged differences between Wolff’s and Baumgarten’s rational psychology, though I also hope to show that, in some cases, the Pietists were rather more perceptive in their reading of Wolff than they are typically given credit for as their criticisms frequently succeed in drawing attention to significant omissions in Wolff’s discussion.

The Southern Journal of Philosophy, EarlyView.

Within eighteenth-century debates on animal cognition we can distinguish at least three main theoretical positions: (i) Buffon’s mechanism, (ii) Reimarus’ theory of instincts, and (iii) the sensationalism of Condillac and Leroy. In this paper, I adopt a philosophical perspective on this debate and argue that in order to fully understand the justification Buffon, Reimarus, Condillac, and Leroy gave for their respective theories, we must pay special attention to the theoretical virtues these naturalists alluded to while justifying their position. These theoretical (...) virtues have received little to no attention in the literature on eighteenth-century animal cognition, but figure prominently in the justification of the mechanist, instinctive, and sensationalist theories of animal behavior. Through my philosophical study of the role of theoretical virtues in eighteenth-century debates on animal cognition, we obtain a deeper understanding of how theoretical virtues were conceptualized in eighteenth-century science and how they influenced the justification of theories of animal cognition. (shrink)

Are psychiatric disorders natural kinds? This question has received a lot of attention within present-day philosophy of psychiatry, where many authors debate the ontology and nature of mental disorders. Similarly, historians of psychiatry, dating back to Foucault, have debated whether psychiatric researchers conceived of mental disorders as natural kinds or not. However, historians of psychiatry have paid little to no attention to the influence of (a) theories within logic, and (b) theories within metaphysics on psychiatric accounts of proper method, and (...) on accounts of the nature and classification of mental disorders. Historically, however, logic and metaphysics have extensively shaped methods and interpretations of classifications in the natural sciences. This paper corrects this lacuna in the history of psychiatry, and demonstrates that theories within logic and metaphysics, articulated by Christian Wolff (1679-1754), have significantly shaped the conception of medical method and (psychiatric) nosology of the influential nosologist Boissier De Sauvages (1706-1767). After treating Sauvages, I discuss the method of the influential nosologist William Cullen (1710-1790), and demonstrate the continuity between the classificatory methods of Sauvages and Cullen. I show that both Sauvages and Cullen were essentialists concerning medical diseases in general and psychiatric disorders in particular, contributing to the history of conceptions of the ontology and nature of mental disorders. (shrink)

In the present paper I investigate the role that analogy plays in eighteenth-century biology and in Kant’s philosophy of biology. I will argue that according to Kant, biology, as it was practiced in the eighteenth century, is fundamentally based on analogical reflection. However, precisely because biology is based on analogical reflection, biology cannot be a proper science. I provide two arguments for this interpretation. First, I argue that although analogical reflection is, according to Kant, necessary to comprehend the nature of (...) organisms, it is also necessarily insufficient to fully comprehend the nature of organisms. The upshot of this argument is that for Kant our understanding of organisms is necessarily limited. Second, I argue that Kant did not take biology to be a proper science because biology was based on analogical arguments. I show that Kant stemmed from a philosophical tradition that did not assign analogical arguments an important justificatory role in natural science. Analogy, according to this conception, does not provide us with apodictically certain cognition. Hence, sciences based on analogical arguments cannot constitute proper sciences. (shrink)

This article is an attempt to formulate a clear definition of the concept of crisis of Western sciences introduced by Husserl in his last work. The attempt will be based on a reading of the Krisis, which will stress its underlying continuity with Husserl’s life-long concerns about the theoretical insufficiency of positive sciences, and downplay the novelty of the idea of crisis itself within Husserl’s work. After insisting on the fact that, according to Husserl, only an account of the shortcomings (...) of the scientificity of Western sciences can justify the claim that they are undergoing a crisis, it will be argued that the common definition of the crisis of the sciences as the loss of their significance for life rests on a misunderstanding. The crisis of Western sciences will be characterized, instead, as the repercussion of the crisis of the scientificity of philosophy on the scientificity of positive sciences. The loss of significance of scientific knowledge for our existence will in turn appear as a further, inevitable consequence of the uprooting of the sciences from the soil of a universal philosophy culminating in metaphysics, and thus, as a phenomenon deeply intertwined with the crisis of Western sciences, but not identical to it. (shrink)

We argue that Kant’s views about consciousness, the mind-body problem, and the status of psychology as a science all differ drastically from the way in which these topics are conjoined in present debates about the prominent idea of a science of consciousness. Kant did never use the concept of consciousness in the now dominant sense of phenomenal qualia; his discussions of the mind-body problem center not on the reducibility of mental properties but of substances; and his views about the possibility (...) of psychology as a science did not employ the requirement of a mechanistic explanation, but of quantification of phenomena. This shows strikingly how deeply philosophical problems and conceptions can change even if they look similar on the surface. (shrink)

In this paper, I discuss Christian Wolff’s conception of motivating and normative reasons. My aim is to show that in the discussion of error cases, Wolff pursues a strategy that is strikingly similar to the strategy of contemporary defenders of nicht-psychologist accounts of motivating reasons. According to many nicht-psychologist views, motivating reasons are facts. My aim is to show that Wolff’s motivation in pursuing this strategy is very different. The point is that due to his commitment to the Principle of (...) Sufficient Reason, Wolff has to show that error cases are compatible with the PSR. The issue is worth discussing because it is not yet sufficiently explored what motivating reasons are, according to Wolff, and how they relate, in substance, to normative reasons. Methodologically, my approach can be characterized as one of “mutual illumination”: I think it is possible to highlight some crucial ambiguities of Wolff’s conception against the backdrop of the contemporary conception of motivating reasons, but also to question the importance and role of the ontological question of what motivating reasons are in contemporary discussions against the backdrop of Wolff’s position. (shrink)

In this paper, I consider the relevance of judgment for practical considerations by discussing Christian August Crusius’s conception of rational desire. According to my interpretation of Crusius’s distinction between rational and non-rational desire, we are responsible at least for our rational desires insofar as we can control them. And we can control our rational desires by judging whether what we want complies with our human nature. It should become clear that Crusius’s conception of rational desire is normative in that we (...) necessarily desire things that are compatible with our nature, such as our own perfection. Therefore, a desire is rational if the desired object is apt to satisfy the desires compatible with our nature. From a contemporary perspective, such a normative conception of rational desire might not appear very attractive; it is apt, however, to stimulate a debate on the normative criteria and the role of judgment for rational desire, which is the ultimate aim of this paper. (shrink)

It was commonly accepted in Goethe’s time that plants were equipped both to propagate themselves and to play a certain role in the natural economy as a result of God’s beneficent and providential design. Goethe’s identification of sexual propagation as the “summit of nature” in The Metamorphosis of Plants (1790) might suggest that he, too, drew strongly from this theological-metaphysical tradition that had given rise to Christian Wolff’s science of teleology. Goethe, however, portrayed nature as inherently active and propagative, itself (...) improvising into the future by multiple means, with no extrinsically pre-ordained goal or fixed end-point. Rooted in the nature philosophy of his friend and mentor Herder, Goethe’s plants exhibit their own historically and environmentally conditioned drives and directionality in The Metamorphosis of Plants. In this paper I argue that conceiving of nature as active productivity—not merely a passive product—freed Goethe of the need to tie plants’ forms and functions to a divine system of ends, and allowed him to consider possibilities for plants, and for nature, beyond the walls of teleology. (shrink)

In the part of the first Critique known as “The Paralogisms of Pure Reason” Kant seeks to explain how even the most acute metaphysicians could have arrived, through speculation, at the ruefully dogmatic conclusion that the self (understood as the subject of thoughts or "thinking I") is a substance. His diagnosis has two components: first, the positing of the phenomenon of “Transcendental Illusion”—an illusion, modelled on but distinct from, optical illusion--that predisposes human beings to accept as sound--and as known to (...) sound--certain in fact flawed arguments for substantive theses about the nature of the self; second, the identification of the fallacy we commit when we succumb to this illusion. It is explained how these two elements combine to produce a central instance of (what Kant sees as) dogmatic speculative metaphysics, namely, the doctrine that the self is a substance in the sense of a necessarily non-inhering subject of inherence. It is argued that Kant has a novel, ingenious, and even somewhat plausible account of the route by which the rational psychologist arrives--or might arrive--at this view, an account that involves identifying a rather deep-rooted confusion about the very nature of conceivability. (shrink)

This paper deals with the ontological foundations of the Soviet interpretation of dialectical materialism as exemplified by one of its “founding fathers,” Abram Deborin, in his works of the late 1920s. It has been claimed that the “ontologizing” tendency in Soviet philosophy is due to the influence of Friedrich Engels and his ideas pertaining to the dialectics of nature. However, a more plausible interpretation is that the ontologism of Soviet philosophy is connected with the rejection of the Kantian Copernican turn (...) in philosophy and the idea of the primacy of gnoseology it implies. In this article, I argue in favor of the latter thesis. Ontologism, i.e., the tendency to give priority in philosophy to questions concerning Being, and anti-Kantianism are but two sides of the same coin. (shrink)

In this essay, I investigate Baumgarten’s doctrine of the six perfections of knowledge (wealth, magnitude, truth, clarity, certainty, and life), which is famously one of the most characteristic and enigmatic features of his philosophy. Recent scholarship has almost unanimously stressed the rhetorical background of the categories. Instead, I argue that Baumgarten elaborates his theory in close relationship with coeval philosophy. To support this claim, I examine the position of some Thomasian philosophers, such as Johann Liborius Zimmermann, who had indicated a (...) list of criteria similar to that of Baumgarten. Moreover, I analyse the distinction between formal and material perfections, tracing it back to the Wolffian milieu. On these bases, I propose a new reconstruction of Baumgarten’s doctrine, with particular attention to its aesthetic application. Finally, I outline the reception of the six categories in the late German Enlightenment until Kant. (shrink)

Since his Metaphysische Anfangsgründe der Naturwissenschaft was first published in 1786, controversy has surrounded Immanuel Kant’s conception of matter. In particular, the justification for both his dynamical theory of matter and the related dismissal of mechanical philosophy are obscure. In this paper, I address these longstanding issues and establish that Kant’s dynamism rests upon Leibnizian, metaphysical commitments held by Kant from his early pre-Critical texts on natural philosophy to his major critical works. I demonstrate that, throughout his corpus and inspired (...) by Leibniz, Kant endorses the a priori law of continuity of alteration as a truth of metaphysics, according to which all alterations in experience must occur gradually through all intervening degrees. The principle thus legislates against mechanical philosophy’s absolutely impenetrable atoms, as they would would involve instantaneous changes of velocity in impact. This reveals the metaphysical incoherencies in mechanical philosophy and leaves Kant’s own dynamical theory of matter, grounded on material forces, as the only viable approach to physical explanation. Subsequently, I demonstrate that Kant nevertheless made conceptual space in his system for the theoretical consideration of mechanical explanations, which makes manifest one of the positive roles that the faculty of reason can play with respect to natural science. (shrink)

Although I begin with a brief look at the idea that as a faculty of mind, apperception must be grounded in some power of the soul, my focus is on claims about the alleged noumenal import of some of Kant’s particular theses about the faculty of apperception: it is inexplicable, immaterial, and can provide evidence that humans are members of the intelligible world. I argue that when the claim of inexplicability is placed in the context of Kant’s standards for transcendental (...) psychological explanation, it has no noumenal implications. Similarly, when understood in the context of his views about scientific explanations, Kant’s claim that the faculty of apperception cannot be understood in materialist terms has no important metaphysical payoff. The case of freedom is different, because for a long time, Kant believed that he could establish the freedom required for morality by appealing to the freedom required for thought. In the end, however, he abandoned this hoped for noumenal implication of the faculty of apperception. (shrink)

What is it that makes a mental state conscious? Recent commentators have proposed that for Kant, consciousness results from differentiation: A mental state is conscious insofar as it is distinguished, by means of our conceptual capacities, from other states and/or things. I argue instead that Kant’s conception of state consciousness is sensory: A mental state is conscious insofar as it is accompanied by an inner sensation. Interpreting state consciousness as inner sensation reveals an underappreciated influence of Crusius on Kant’s view, (...) solves some long-standing puzzles concerning Kant’s difficult doctrine of self-affection, and sheds light on his theory of inner experience. (shrink)

The essay is a discussion of Christian Wolff’s attempt to justify morality on rational grounds and provide an adequate response to the free will controversy, securing freedom against determinism. It is shown that Wolff failed to deliver a satisfactory solution to this issue. His position known as a “half-determinism” does not provide a philosophical truce between freedom and determinism. Instead, it leads to a series of mistakes and philosophical implications that indicate an unresolved philosophical problem.

In attempts to come to grips with Kant’s thought, the influence of the philosophy of Christian Wolff (1679-1754) is often neglected. In this paper, I consider three topics in Kant’s philosophy of mind, broadly construed, where Wolff’s influence is particularly visible: consciousness, self-consciousness, and psychology. I argue that we can better understand Kant’s particular arguments and positions within this context, but also gain a more accurate sense of which aspects of Kant’s accounts derive from the antecedent traditions and which constitute (...) genuine philosophical innovations. (shrink)

ABSTRACTDiscussions of the reception of materialist thought in Germany in the first half of the eighteenth century tend to focus, naturally enough, upon the homegrown freethinkers who advanced the cause of Lucretius, Hobbes, and Spinoza in clandestine publications and frequently courted the ire of the state for doing so. If the philosophers belonging to the mainstream of German intellectual life in that period are accorded a place in the story, it is only insofar as they actively set themselves against the (...) materialist threat and, in the course of working to undermine it, actually only succeeded in inadvertently drawing more popular attention to it. By contrast, in this paper I will show that it was not just insofar as the thinkers of the early eighteenth century played the role of the diligent critic and unwittingly propagated the views of their opponents that materialism can be said to have penetrated into the very mainstream of the German Enlightenment. Rather, as I will argue, there was a striking degr... (shrink)

This essay addresses the attitude of some leading Neo-Kantian philosophers toward scientific psychology and psychophysics. Early influential figures like Friedrich A. Lange counted Gustav T. Fechner’s psychophysical law among their allies in the rehabilitation of the Kantian standpoint. Later on, however, Neo-Kantian philosophers firmly rejected psychological measurement as a whole and harshly criticized the methods adopted by several psychologists of their time. For example, the Marburg mathematician and philosopher August Stadler reduced the validity of Fechner’s law to the mere physiological (...) sphere, and Hermann Cohen conceived the application of mathematical integration to human sensations as an inane enterprise. (shrink)

El objetivo del presente artículo es ofrecer una interpretación de la doctrina del esquematismo de los conceptos empíricos y matemáticos presentada por Kant en su Crítica de la razón pura. Mostramos que los esquemas de los conceptos empíricos y matemáticos son procedimientos de síntesis gobernados por reglas conceptuales. Aunque no consideramos que esta doctrina kantiana carece de problemas, nuestro trabajo muestra que: 1) esos esquemas pueden distinguirse rigurosamente de sus correspondientes conceptos; 2) esos esquemas no son entidades superfluas. Estas conclusiones (...) se alcanzan mostrando que el contenido de un concepto determina la unidad de elementos sensibles que tiene que ser efectuada por un esquema en tanto procedimiento de síntesis. (shrink)

The article investigates the relationship between Leibniz’s and Huygens’ theory of possibility and the principle of conservation of energy. It assumes that their criticisms of Cartesian views concerning those questions as well as their own achievements contributed to the formation of a new metaphysical basis for modern discussions on the freedom of the will. There are especially two problems whose role is crucial in this context, namely the question of God’s knowledge of future conditionals (contingentia futura) and the mind-body distinction.