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16684 | Impenetrability only belongs to the essence of extension [Descartes] |
Full Idea: It is demonstrated that impenetrability belongs to the essence of extension and not to the essence of any other thing. | |
From: René Descartes (Two letters on mind [1649], More, Apr 1649), quoted by Robert Pasnau - Metaphysical Themes 1274-1671 15.5 | |
A reaction: I'm not sure that I understand how pure extension can be impenetrable. |