Vollkommene Syllogismen und reine Vernunftschlüsse: Aristoteles und Kant. Eine Stellungnahme zu Theodor Eberts Gegeneinwänden. Teil 2

In an earlier article (see J Gen Philos Sci (2010) 41: 341–355) I have compared Aristotle’s syllogistic with Kant’s theory of “pure ratiocination”. “Ratiocinia pura” („reine Vernunftschlüsse“) is Kant’s designation for assertoric syllogisms Aristotle has called ‘perfect’. In Kant’s view they differ from non-pure ratiocinia precisely in that their validity rests only on the validity of the Dictum de omni et nullo (which, however, in Kant’s view can be further reduced to more fundamental principles) whereas the validity of non-pure ratiocinia additionally presupposes the validity of inferences which Kant calls consequentiae immediatae. I have argued that Kant’s view is in some (not in all) essential features in accordance with Aristotle’s view concerning perfect syllogisms and certainly leading to a tenable and interesting logical theory. As a result I have rejected not only the interpretation of Aristotle adopted by Theodor Ebert, but also the objections he has raised against Kant’s logical theory. As far as Aristotle is concerned, Ebert has attempted to defend his position in the first part of his reply to my article published in J Gen Philos Sci (2009) 40: 357–365, and I have argued against this defence in issue 1 of the J Gen Philos Sci (2010) 41: 199–213 (cf. Ebert’s answer in the same issue pp. 215–231). In the following discussion I deal with Eberts defence of his criticism of Kant published in the second part of his reply to my article (see J Gen Philos Sci (2009) 40: 365–372). I shall argue, that Kant’s principle ‘nota notae est nota rei ipsius’ and his use of technical vocabulary stand up to the objections raised by Ebert. His attempts to prove that Kant’s logical theory is defective are based on several misinterpretations.     

Michael Wolff über Kant als Logiker. Eine Stellungnahme zu Wolffs Metakritik

In an earlier article (see J Gen Philos Sci (2009) 40: 357–372) I have discussed the arguments brought forward by Michael Wolff against the interpretation given in the commentary by Ebert and Nortmann on Aristotle’s syllogistic theory (Aristoteles Analytica Priora Buch I, übersetzt und erläutert von Theodor Ebert und Ulrich Nortmann. Berlin 2007) and against the critique of Kant’s adaption of the syllogistic logic. I have dealt with Wolff’s arguments concerning (Ebert/Nortmann’s interpretation of) Aristotle in the paper mentioned and with his attempts to defend his critique in this subsequent article (part 1; see J Gen Phils Sci (2010) 41: 215–231). Part 2 (the paper below) is concerned with Wolff’s renewed attempts to defend Kant as a logician. In particular I point out that if, as Wolff claims, the nota notae relation in Kant is restricted to subordinated concepts, then it can hardly serve as a principle for syllogistic logic, as Kant claims. Against Wolff’s attempts to defend Kant’s claim that o-propositions are simpliciter convertible, I point out two arguments: (1) Even if Kant, following the Vernunftlehre by Meier, has assumed that an o-proposition can be turned into an i-proposition, this conversion is useless for the reduction to first figure syllogisms since we are no longer dealing with three syllogistic terms but with four. (2) It is quite unlikely that Kant has a conversion of this type in mind since the texts of his students always talk of the group of either the particular propositions or else of the negative propositions. Given Kant’s mistakes concerning the convertibility simpliciter of o-propositions, it is no wonder that he overlooks the special status of the moods Baroco and Bocardo. Wolff’s attempts to provide Kant with what he claims are direct proofs for these moods can be shown to rely on a reductio ad impossibile. Kant mistook what are parts of the proofs for the validity of moods in figures two to four as parts of these moods themselves. Wolff—who tries to defend Kant on this point—is forced to an artificial and unconvincing reading of the Kantian texts.     

Über Rückfälligkeit bei Umgewöhnung. Teil II. Über Handlungsganzheiten und ihre Bedeutung für die Rückfälligkeit

Ohne Zusammenfassung Mit 6 Textabbildungen (Abb. 8–13). Teil I: Psychol. Forsch.9, 86f. (1927). Infolge verschiedener Umst?nde gelangt Teil II der bereits früher durchgeführten Arbeit erst jetzt zum Abdruck.     

Grundzüge eines Synthesis-Modells der Auffassung: Kant und Husserl über den Ordnungsgrad sinnlicher Vorgegebenheiten und die Elemente einer Phänomenologie der Auffassung

Ohne Zusammenfassung