Kant's distinction between intuitive and discursive knowledge precludes his giving intuitions linguistic representation. Singular terms represent concepts given what kant calls a 'singular use' and are analyzable as definite descriptions. That the object described exists and that there is only one such object can be given linguistic representation only through an explicit assertion of existence and uniqueness. As an intuitionist in mathematics kant holds that mathematics proclaims the constructibility and not the existence of its objects.

The problems which that earlier period considered fundamental to all science were those of the theory of knowledge: What is true in our sense perceptions and thought? and In what way do our ideas correspond to reality? Philosophy and the natural sciences attack these questions from opposite directions, but they are the common problems of both. Philosophy, which is concerned with the mental aspect, endeavours to separate out whatever in our knowledge and ideas is due to the effects of the (...) material world, in order to determine the nature of pure mental activity. The natural sciences, on the other hand, seek to separate out definitions, systems of symbols, patterns of representation, and hypotheses, in order to study the remainder, which pertains to the world of reality whose laws they seek, in a pure form. Both try to achieve the same separation, though each is interested in a different part of the divided field. (shrink)

The Marburg neo-Kantians argue that Hermann von Helmholtz's empiricist account of the a priori does not account for certain knowledge, since it is based on a psychological phenomenon, trust in the regularities of nature. They argue that Helmholtz's account raises the 'problem of validity' (Gueltigkeitsproblem): how to establish a warranted claim that observed regularities are based on actual relations. I reconstruct Heinrich Hertz's and Ludwig Wittgenstein's Bild theoretic answer to the problem of validity: that scientists and philosophers can depict the (...) necessary a priori constraints on states of affairs in a given system, and can establish whether these relations are actual relations in nature. The analysis of necessity within a system is a lasting contribution of the Bild theory. However, Hertz and Wittgenstein argue that the logical and mathematical sentences of a Bild are rules, tools for constructing relations, and the rules themselves are meaningless outside the theory. Carnap revises the argument for validity by attempting to give semantic rules for translation between frameworks. Russell and Quine object that pragmatics better accounts for the role of a priori reasoning in translating between frameworks. The conclusion of the tale, then, is a partial vindication of Helmholtz's original account. (shrink)

The object in this article is to discuss the philosophical bearing of recent inquiries concerning geometrical axioms and the possibility of working out analytically other systems of geometry with other axioms than Euclid's. Digital edition compiled by Gabriele Dörflinger, Heidelberg University Library.

Arthur Schopenhauer: Über die vierfache Wurzel des Satzes vom zureichenden Grunde. Eine philosophische Abhandlung Schopenhauers Dissertation lag im Oktober 1813 der Philosophischen Fakultät der Universität Jena vor. Erstdruck: Rudolstadt 1813. Wiedergegeben wird der Text der 2. verbesserten Auflage, Frankfurt am Main 1847, in den spätere Herausgeber allerdings Zusätze integrierten, die sie Schopenhauers Handexemplaren und Manuskriptbüchern entnahmen. Sofern sich diese Zusätze nicht in den laufenden Text einfügen ließen, wurden sie in Fußnoten beigefügt. Diese Fußnoten werden hier gesondert gezählt und sind durch (...) ein A gekennzeichnet. Vollständige Neuausgabe mit einer Biographie des Autors. Herausgegeben von Karl-Maria Guth. Berlin 2016. Textgrundlage ist die Ausgabe: Arthur Schopenhauer. Zürcher Ausgabe. Werke in zehn Bänden. Der Text folgt der historisch-kritischen Ausgabe von Arthur Hübscher. Die editorischen Materialien besorgte Angelika Hübscher. Redaktion von Claudia Schmölders, Fritz Senn und Gerd Haffmanns, Zürich: Diogenes, 1977. Die Paginierung obiger Ausgabe wird in dieser Neuausgabe als Marginalie zeilengenau mitgeführt. Umschlaggestaltung von Thomas Schultz-Overhage unter Verwendung des Bildes: Arthur Schopenhauer als junger Mann, porträtiert 1815 von Ludwig Sigismund Ruhl. Gesetzt aus der Minion Pro, 11 pt. (shrink)

Helmholtz's theory of space had significant impact on Schlick's early ?critical realist? point of view. However, it will be argued in this paper that Schlick's appropriation of Helmholtz's ideas eventually lead to a rather radical transformation of the original Helmholtzian position.

By way of a reply to Charles Parsons's paper in the Nagel Festschrift, Kant's notion of intuition (Anschauung) is examined. It is argued that for Kant the immediate relation which an intuition has to its object is a mere corollary to its singularity. It does not presuppose (as Parsons suggests) any presence of the object to the mind. This is shown, e.g., by the Prolegomena § 8, where the objects of intuitions a priori are denied by Kant to be so (...) present. They yield knowledge, not in virtue of their immediacy but in virtue of their ideality. (shrink)

ArgumentThis paper aims at contributing to the ongoing efforts to get a firmer grasp of the systematic significance of the entanglement of idealism and empiricism in Helmholtz's work. Contrary to existing analyses, however, the focal point of the present exposition is Helmholtz's attempt to articulate a psychological account of objectification. Helmholtz's motive, as well as his solution to the problem of the object are outlined, and interpreted against the background of his scientific practice on the one hand, and that of (...) empiricist and (transcendental) idealist analyses of experience on the other. The specifically psychological angle taken, not only prompts us to consider figures who have hitherto been treated as having only minor import for Helmholtz interpretation (most importantly J.S. Mill and J.G. Fichte), it furthermore sheds new light on some central tenets of the latter's psychological stance that have hitherto remained underappreciated. For one thing, this analysis reveals an explicit voluntarist tendency in Helmholtz's psychological theory. In conclusion, it is argued that the systematic significance of Helmholtz's empirico-transcendentalism with respect to questions of the mind is best understood as an attempt to found his empirical theory of perception in a second order, normative account of epistemic subjectivity. (shrink)

This chapter examines the Helmholtz's changing conceptions of the relation between scientific cognition (the thought processes of the investigator) and artistic cognition. It begins with two case studies: Helmholtz's application of sensory physiology and psychology respectively to music and to painting. Consideration of these concrete cases leads to Helmholtz's account of the methodology of aesthetics, and specifically to his formulation of the distinction between the *Geisteswissenschaften* and *Naturwissenschaften*. It then examines the development of his comparative account of the thought processes (...) of artist and scientist. This development parallels the development of his psychological theory of judgment into his famous theory of unconscious inference. The latter development exemplifies his classical "aesthetics of science.". (shrink)

Abstract: This essay addresses three specific moments in the history of the role played by intuition in Kant's system. Part one develops Kant's attitude toward intuition in order to understand how ‘sensible intuition’ becomes the first step in his development of transcendental idealism and how this in turn requires him to reject the possibility of an ‘intellectual intuition’ for human cognition. Part two considers the role of Jacobi when it came to interpreting both Kant's epistemic achievement and what were taken (...) to be the outstanding problems of freedom's relation to nature; problems interpreted to be resolvable only via an appeal to ‘intellectual intuition’. Part three begins with Kant's subsequent return to the question of freedom and nature in his Critique of Judgment. With Goethe's contemporaneous Metamorphoses of Plants as a contrast case, it becomes clear that whereas Goethe can embrace the role of an intuitive understanding in his account of nature and within the logic of polarity in particular, Kant could never allow an intuition of nature that in his system would spell the very impossibility of freedom itself. (shrink)

One of the defining characteristics of Kant’s “critical philosophy” is what has been called the “critique of immediacy” or the rejection of the “myth of the given.” According to the Kantian position, no object can count as an object for a human knower apart from the knower’s own activity or spontaneity. That is, no object can count as an object for a human knower on the basis of the object’s givenness alone. But this gives rise to a problem: how is (...) it possible to accept the Kantian critique of immediacy while also giving an epistemologically adequate account of the constrained or finite character of human knowing (i.e., an account that does not rely on some appeal to what is simply “given”)? This paper examines how this crucial question is addressed (with more or less success) in the “critical philosophies” of Kant, Lonergan, and Fichte. (shrink)

The failure to recognize the programmatic similarity between (post-)Kantian German philosophy and early psychology has impoverished psychology's historical self-understanding to a great extent. This article aims to contribute to recent efforts to overcome the gaps in the historiography of contemporary psychology, which are the result of an empiricist bias. To this end, we present an analysis of the way in which Hermann von Helmholtz's theory of perception resonates with Johann Gottlieb Fichte's Ego-doctrine. It will be argued that this indebtedness is (...) particularly clear when focusing on the foundation of the differential awareness of subject and object in perception. In doing so, the widespread reception of Helmholtz's work as proto-positivist or strictly empiricist is challenged, in favor of the claim that important elements of his theorizing can only be understood properly against the background of Fichte's Ego-doctrine. (shrink)

Johannes Müller's law of specific nerve energies (LOSNE) states that the mind has access not to objects in the world but only to our nerves. This law implies that the contents of the mind have no qualities in common with environmental objects but serve only as arbitrary signs or markers of those objects. The present article traces the implications of LOSNE for non-physical theories of mind and for modern neural identity theory (that mental events are identical with their neurological representations) (...) and argues that these theories are essentially inconsistent with LOSNE. Teleological behaviorism, a behavioral identity theory of the mind, identifies a person's mind with the correlation over time between that person's overt behavior and environmental objects; this behavioral conception is consistent with a revised form of LOSNE in which the mind is conceived to exist not within the body but at the borderline between the body and the world. (shrink)