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Sixth Meditation: The existence of material things, and the real distinction between mind and body

Rene Descartes

Cambridge University Press eBooks April 18, 1996 DOI: 10.1017/cbo9780511805028.012 (opens in new tab)

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AI-extracted from the abstract
Characteristics Theoretical or philosophical paper Peer reviewed
Topics Meditation
Citations 4
Key points Argues that material things exist because they are clearly and distinctly perceived as the subject matter of pure mathematics and because the faculty of imagination, which applies the mind to a body intimately present to it, suggests their existence. Proposes that imagination differs from pure understanding, illustrated by the triangle, which can be pictured, versus the chiliagon, whose thousand sides cannot be imagined but can be understood.

Abstract

It remains for me to examine whether material things exist. And at least I now know they are capable of existing, in so far as they are the subject-matter of pure mathematics, since I perceive them clearly and distinctly. For there is no doubt that God is capable of creating everything that I am capable of perceiving in this manner; and I have never judged that something could not be made by him except on the grounds that there would be a contradiction in my perceiving it distinctly. The conclusion that material things exist is also suggested by the faculty of imagination, which I am aware of using when I turn my mind to material things. For when I give more attentive consideration to what imagination is, it seems to be nothing else but an application of the cognitive faculty to a body which is intimately present to it, and which therefore exists. To make this clear, I will first examine the difference between imagination and pure understanding. When I imagine a triangle, for example, I do not merely understand that it is a figure bounded by three lines, but at the same time I also see the three lines with my mind's eye as if they were present before me; and this is what I call imagining. But if I want to think of a chiliagon, although I understand that it is a figure consisting of a thousand sides just as well as I understand the triangle to be a three-sided figure, I do not in the same way imagine the thousand sides or see them as if they were present before me.

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