Stoicism is one of the richest and most influential intellectual traditions of antiquity. Leading scholars here contribute new studies of a set of topics which are the focus of current research in this area. They combine careful analytical attention to the original texts with historical sensitivity and philosophical acuity, to provide the basis for a better understanding of Stoic ethics, political theory, logic, and physics.

The book includes 13 contributions that deal with the first attempts of opposition to the of Aristotle's thought. From Theophrastus to Epicurus, and to Plotinus. The best specialists have collaborated (among others: M. Mignucci, E. Berti, K. Ierodiakonou, C. Natali, S. Maso, F. Ferrari, D. Taormina, A. Falcon, A. Schiaparelli).

ABSTRACT: In antiquity we encounter a distinction of two types of hypothetical syllogisms. One type are the ‘mixed hypothetical syllogisms’. The other type is the one to which the present paper is devoted. These arguments went by the name of ‘wholly hypothetical syllogisms’. They were thought to make up a self-contained system of valid arguments. Their paradigm case consists of two conditionals as premisses, and a third as conclusion. Their presentation, either schematically or by example, varies in different authors. For (...) instance, we find ‘If (it is) A, (it is) B; if (it is) B, (it is) C; therefore, if (it is) A, (it is) C’. The main contentious point about these arguments is what the ancients thought their logical form was. Are A, B, C schematic letters for terms or propositions? Is ‘is’, where it occurs, predicative, existential, or veridical? That is, should ‘A esti’ be translated as ‘it is an A’, ‘A exists’, ‘As exist’ or ‘It is true/the case that A’? If A, B, C are term letters, and ‘is’ is predicative, are the conditionals quantified propositions or do they contain designators? If one cannot answer these questions, one can hardly claim to know what sort of arguments the wholly hypothetical syllogisms were. In fact, all the above-mentioned possibilities have been taken to describe them correctly. In this paper I argue that it would be mistaken to assume that in antiquity there was one prevalent understanding of the logical form of these arguments - even if the ancients thought they were all talking about the same kind of argument. Rather, there was a complex development in their understanding, starting from a term-logical conception and leading to a propositional-logical one. I trace this development from Aristotle to Philoponus and set out the deductive system on which the logic of the wholly hypothetical syllogisms was grounded. (shrink)

The taxonomy and analysis of fallacies in Aristotle's Sophistical Refutations pre-date the formal logic of his Prior Analytics A4-6. Of the 64 fully described examples of ?sophistical refutations? which are fallacious because they are only apparently valid, 49 have the wrong number of premisses or the wrong form of premiss or conclusion for analysis by the Prior Analytics theory of the categorical syllogism. The rest Aristotle either frames so that they do not look like categorical syllogisms or analyses in a (...) quite different way than by categorical syllogistic. (shrink)

"Der vorliegende Band vereinigt die Beitrèage des Symposiums zur Logik der Stoiker und ihrer Vorlèaufer, das vom 1.-7.9.1991 in Bamberg stattfand"--P. [7].

Pendant cinq siecles, de 300 av. J.C. jusqu'au crepuscule de Marc Aurele, la philosophie stoicienne domina la culture antique. Encore aujourd'hui, notre grammaire, notre logique et notre linguistique sont les heritieres plus ou moins conscientes de l'une des trois parties de cette philosophie, la dialectique, qui fut, dans sa forme classique, l'oeuvre de Chrysippe (280-204 av. J.C.). Ce livre est la premiere reconstruction synthetique de la dialectique stoicienne dans son ensemble. Son point de vue est en outre entierement nouveau. En (...) effet, pour l'auteur, les stoiciens n'avaient pas une logique au sens moderne du terme, mais une dialectique, c'est-a-dire une technique de l'argumentation dialoguee. Sa conception complexe, a premiere vue multiple et equivoque, recoit ainsi un eclairage inedit, qui permet de comprendre son originalite et d'en reinterpreter la place dans l'ensemble du systeme. Cela nous permet aussi de mieux comprendre le sens des disciplines qui en sont les heritieres infideles. (shrink)

v. 1. The Greek tradition -- v. 2. Greek texts and fragments of the Latin translation of "Alexander's" commentary -- v. 3. Appendices, Danish summary, indices.

Awarded the 1988 Johnsonian Prize in Philosophy. Published with the aid of a grant from the National Endowment for the Humanities.