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1686.05.13
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p.104
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16519
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No one can conceive of a possible substance, apart from those which God has created
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Full Idea:
I am much mistaken if there is anyone who dares to say that he can conceive of a purely possible substance, …for although one talks so much of them, one never conceives them except according to the notion of those which God has created.
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From:
Antoine Arnauld (Letters to Leibniz [1686], 1686.05.13), quoted by David Wiggins - Sameness and Substance 4.2
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A reaction:
This idea cashes out in the 'necessitism' of Tim Williamson, and views on the Barcan formulae in modal logic.
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