- The Oxford Handbook of Medieval Philosophy
- The Late Ancient Background to Medieval Philosophy
- Greek Philosophy
- Arabic Philosophy and Theology before Avicenna
- Avicenna and Afterwards
- Averroes and Philosophy in Islamic Spain
- Medieval Jewish Philosophy in Arabic
- Jewish Philosophy in Hebrew
- Latin Philosophy to 1200
- Latin Philosophy, 1200–1350
- Latin Philosophy, 1350–1550
- Medieval Philosophy after the Middle Ages
- Logical Form
- Logical Consequence
- Meaning: Foundational and Semantic Theories
- Mental Language
- States of Affairs
- Parts, Wholes and Identity
- Material Substance
- Mind and Hylomorphism
- Body and Soul
- Scepticism and Metaphysics
- Freedom of the Will
- Moral Intention
- Virtue and Law
- Natural Law
- Arguments for the Existence of God
- Philosophy and the Trinity
Abstract and Keywords
This article notes that some aspects of what constitutes good argumentation were seen as deriving from formal considerations. These aspects were treated by the medievals as falling under a concept of logical form, but there were at least two notions of logical form. In one sense, form is contrasted with matter in the context of Aristotelian hylomorphic theory. In another sense, form contrasts with matter, that which it is about (id de quo). In this second sense, the matter that is opposed to form is subject matter, or content. Both these notions of form can be traced back to Aristotle, the hylomorphic concept to his physical and metaphysical works, the notion of form as opposed to content to some of his logical works.
Paul Thom is an Honorary Professor in Philosophy at the University of Sydney. His latest book, The Logic of the Trinity: Augustine to Ockham, is forthcoming with Fordham University Press.
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