There are two traditional ways to read Kant's claim that every event necessarily has a cause: the weaker every-event some-cause and the stronger same-cause same-effect causal principles. The focus of the debate about whether and where he subscribes to the SCP has been in the Analogies in the Critique of Pure Reason and in the Metaphysical Foundations of Natural Science. By analysing the arguments and conclusions of both the Analogies and the Postulates as well as the two Latin principles non (...) datur casus and non datur fatum that summarise their results, I will argue for the novel thesis that the SCP is actually demonstrated in the Postulates of the First Critique. (shrink)

: According to Kant, the arguments of rational psychology are formal fallacies that he calls transcendental paralogisms. It remains heavily debated whether there actually is any formal error in the inferences Kant presents: according to Grier and Allison, they are deductively invalid syllogisms, whereas Bennett, Ameriks, and Van Cleve deny that they are formal fallacies. I advance an interpretation that reconciles these extremes: transcendental paralogisms are sound in general logic but constitute formal fallacies in transcendental logic. By formalising the paralogistic (...) inference, I will pinpoint the error as an illegitimate existential presupposition. Since - unlike transcendental logic - general logic abstracts from all objects, this error can only be detected in transcendental logic. (shrink)

According to what Jonathan Bennett calls the Kant–Frege view of existence, Frege gave solid logical foundations to Kant’s claim that existence is not a real predicate. In this article I will challenge Bennett’s claim by arguing that although Kant and Frege agree on what existence is not, they agree neither on what it is nor on the importance and justification of existential propositions. I identify three main differences: first, whereas for Frege existence is a property of a concept, for Kant (...) it is a relational property pertaining between the concept and intuition of an object. Second, whereas for Frege truth about individuals presupposes their existence, for Kant truth is in many cases independent of the existence of objects. Third, whereas Frege binds logic to existence and removes modalities from logic, for Kant existence is a modal category that is emphatically removed from the domain of logic and set in the core of metaphysics. Due to these differences in Kant’s and Frege’s theories of existence, Frege cannot be seen as giving logical clarity to Kant’s view. (shrink)

In the presentation I will analyse Kant’s conception of modalities and consider its relevance to his critical metaphysics. With his Tables of Judgements and of Categories Kant makes an important division between two kinds of modality, of which the former is only logical and the latter transcendental, i.e., objective. Only judgements that are necessary in both ways are properly metaphysical. This distinction is important for Kant’s distinction between Transcendental Analytic and Transcendental Dialectic, i.e., between acceptable and unacceptable metaphysics. I submit (...) that not only is Kant’s theory of modality useful for properly understanding his arguments in the Dialectic, but that only by distinguishing between the two types of modality can one can make sense of his theory that the ideas of reason are simultaneously inevitable and erroneous. This modal analysis thus offers a new and important point of view to Kant’s metaphysics and its critique. (shrink)

In the course of his philosophy, in various contexts, Kant comes to reject three theses about existence: (i) that the thoroughgoing determination of a thing implies its existence, (ii) that existence is a real predicate or determination of a thing, and (iii) that existence is the complement of inner possibility or essence. Kant’s target here is Baumgarten, who advocates these theses as the criterion, classification, and definition of existence. In this article I seek to clarify Kant’s elusive theory of existence (...) through its opposition to Baumgarten. I will show that Kant’s refutation of (i)–(iii) does not stand alone but is grounded on his own definition of existence as (absolute) positing. Thus contrary to common practice, Kant’s negative claims about what existence is not cannot be understood in isolation but must be taken as jointly dependent on Kant’s positive claim of what existence is. I will show that the theses (i)–(iii) fail because they presuppose that existence contributes to the intension or content of a concept, whereas according to Kant existence in fact posits a (non-empty) extension to the concept. (shrink)

The debate on how to interpret Kant's transcendental idealism has been prominent for several decades now. In his book Kant's Transcendental Proof of Realism (2004) Kenneth R. Westphal introduces and defends his version of the metaphysical dual-aspect reading. But his real aim lies deeper: to provide a sound transcendental proof for (unqualified) realism, based on Kant's work, without resorting to transcendental idealism. In this sense his aim is similar to that of Peter F. Strawson – although Westphal's approach is far (...) more sophisticated. First he attempts to show that noumenal causation – on the reality of which his argument partly rests – is coherent in and necessary for Kant's transcendental idealism. Westphal then aims to undermine transcendental idealism by two major claims: Kant can neither account for transcendental affinity nor satisfactorily counter Hume's causal scepticism. Finally Westphal defends his alternative for transcendental idealism by showing that it solves these problems and thus offers a genuine transcendental proof for realism. In this paper I will show that all the three steps outlined above suffer from decisive shortcomings, and that consequently, regardless of its merits, Westphal's transcendental argument for realism remains undemonstrated. (shrink)

Kant’s view that freedom is a “kind of causality” seems to conflict with his claim that the categories of the understanding – including causality – can only be applied objectively to sensible phaenomena, never to supersensible noumena, as freedom is only possible for the latter. I argue that only Kant’s theory of symbolic presentation, according to which the category of cause is applied merely analogically to freedom, can dispel this threatening inconsistency. Unlike it is commonly thought, one cannot here use (...) the category of cause in its unschematised form to think freedom as causality, for its mere logical significance does not suffice for the practical reality of freedom. Symbolic cognition in turn is not unschematised but indirect schematized presentation. Ultimately I will show that symbolic cognition is a necessary condition of moral agency – but not of morality itself – for without it we could not cognize and hence self-consciously use our freedom to act from the moral law. (shrink)