"It appears then that the distance between one thing and another does not depend on any material thing between them, as Descartes seems to assert when he says that if that which is in a hollow vessel were taken out of it without anything entering to fill its place, the sides of the vessel, having nothing between them, would be in contact. This assertion is grounded on the dogma of Descartes, that the extension in length, breadth, and depth which constitute space is the sole essential property of matter. "The nature of matter," he tells us, "or of body considered generally, does not consist in a thing being hard, or heavy, or colored, but only in its being extended in length, breadth, and depth." By thus confounding the properties of matter with those of space he arrives at the logical conclusion, that if the matter within a vessel could be entirely removed the space within the vessel would no longer exist. In fact he assumes that all space must be always full of matter."
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Reference René Descartes, Principia philosophiae (Principles of Philosophy) (1644) Part II, Article 4
https://en.wikiquote.org/wiki/Matter_and_Motion
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René Descartes
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