In Ciceronis Topica and De topicis differentiis are Boethius's two treatises on Topics (loci). Together these two works present Boethius's theory of the art of discovering arguments, a theory that was highly influential in the history of medieval logic.

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Students of Boethius and of medieval logic will... profit from Stump's work on this difficult treatise. Her translation,... the first into English... and the interpretative essays, e.g., on dialectic and Aristotle's Topics, Peter of Spain, and the Porphyrian Tree, are useful and informative.