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American Catholic Philosophical Quarterly

Volume 84, Issue 1, Winter 2010

John O’Callaghan
Pages 133-162

Concepts, Mirrors, and Signification
Response to Deely

This article is a reply by the author to John Deely’s book review “How to Go Nowhere with Language: Remarks on John O’Callaghan, Thomist Realism and the Linguistic Turn” (ACPQ vol. 82, no. 2). Its main topics are: (i) Deely’s view that, for Aquinas, the concept is distinct from the act of understanding, (ii) John of St. Thomas’s use of mirror images as a metaphor for how concepts work in cognition, and (iii) the sign relation posited by Aristotle that stands between words and concepts of the mind.

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