4. The Logical Textbooks and Topical Reasoning

Author: Marenbon, John

Source: Boethius, February 2003 , pp. 43-66(24)

Publisher: Oxford Scholarship Online Monographs

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Abstract:

Discusses Boethius's logical monographs: his treatises on division, on categorical syllogisms, and most importantly, his works on the theory of topical argument and on hypothetical syllogisms. The theory of topics, as developed in late antiquity and known almost entirely through Boethius, concerns the devising of arguments that rest on obvious general principles but are not, in their basic formulation, formally valid deductions. In his work on hypothetical syllogisms, Boethius seems to take account of Stoic propositional logic, but in fact, he does not properly grasp its principles. This chapter shows how Boethius's logical mongraphs fit with the Aristotelianizing approach of his commentaries.

Keywords: Stoic logic; categorical syllogisms; topical argument; propositional logic; hypothetical syllogisms

Document Type: Research article

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