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16687 | Bodies are three-dimensional substances [Aquinas] |
Full Idea: Bodies are those substances in which one finds three dimensions. | |
From: Thomas Aquinas (Summa Theologicae [1265], Ia Q18.2c), quoted by Robert Pasnau - Metaphysical Themes 1274-1671 16.2 | |
A reaction: Pasnau points out that this extensional view of physical bodies was a commonplace long before Descartes. Presumably there are also non-dimensional substances (such as angels?). |