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1525Pre-Stoic Hypothetical Syllogistic in GalenThe Bulletin of the Institute of Classical Studies 57-72. 2002.ABSTRACT: This paper traces the evidence in Galen's Introduction to Logic (Institutio Logica) for a hypothetical syllogistic which predates Stoic propositional logic. It emerges that Galen is one of our main witnesses for such a theory, whose authors are most likely Theophrastus and Eudemus. A reconstruction of this theory is offered which - among other things - allows to solve some apparent textual difficulties in the Institutio Logica.
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179Propositional Logic in AmmoniusIn Helmut Linneweber-Lammerskitten & Georg Mohr (eds.), Interpretation und Argument, Koenigshausen & Neumann. 2002.ABSTRACT: This paper collects the evidence in Ammonius' surviving works for elements of a propositional logic, coming to the conclusion that Ammonius had a theory of hypothetical syllogisms in the tradition of Aristotle and the Peripatetics, with Platonic elements mixed in, and using some Stoic elements, but not a propositional logic in the narrower sense as we find it in Stoic logic.
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1684Kant's Categories of FreedomIn Hariolf Oberer & Gerhard Seel (eds.), Kant: Analysen, Probleme, Kritik, Königshausen & Neumann. 1988.ABSTRACT: A general interpretation and close textual analysis of Kant’s theory of the categories of freedom (or categories of practical reason) in his Critique of Practical Reason. My main concerns in the paper are the following: (1) I show that Kant’s categories of freedom have primarily three functions: as conditions of the possibility for actions (i) to be free, (ii) to be comprehensible as free and (iii) to be morally evaluated. (2) I show that for Kant actions, although qua theoretical obje…Read more
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252Early Stoic DeterminismRevue de Métaphysique et de Morale 4 (4): 489-516. 2005.ABSTRACT: Although from the 2nd century BC to the 3rd AD the problems of determinism were discussed almost exclusively under the heading of fate, early Stoic determinism, as introduced by Zeno and elaborated by Chrysippus, was developed largely in Stoic writings on physics, independently of any specific "theory of fate ". Stoic determinism was firmly grounded in Stoic cosmology, and the Stoic notions of causes, as corporeal and responsible for both sustenance and change, and of effects as incorp…Read more
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2036Chrysippus and the epistemic theory of vaguenessProceedings of the Aristotelian Society 102 (1): 217-238. 2002.ABSTRACT: Recently a bold and admirable interpretation of Chrysippus’ position on the Sorites has been presented, suggesting that Chrysippus offered a solution to the Sorites by (i) taking an epistemicist position1 which (ii) made allowances for higher-order vagueness. In this paper I argue (i) that Chrysippus did not take an epistemicist position, but − if any − a non-epistemic one which denies truth-values to some cases in a Sorites-series, and (ii) that it is uncertain whether and how he made…Read more
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4618Choice and Moral Responsibility in Nichomachean Ethics III 1–5In Ronald M. Polansky (ed.), The Cambridge Companion to Aristotle's Nicomachean Ethics, Cambridge University Press. pp. 81-109. 2014.ABSTRACT: This paper serves two purposes: (i) it can be used by students as an introduction to chapters 1-5 of book iii of the NE; (ii) it suggests an answer to the unresolved question what overall objective this section of the NE has. The paper focuses primarily on Aristotle’s theory of what makes us responsible for our actions and character. After some preliminary observations about praise, blame and responsibility (Section 2), it sets out in detail how all the key notions of NE iii 1-5 are in…Read more
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