Combining Texts
Ideas for
'Abstract Objects: a Case Study', 'Ways Worlds Could Be' and 'Meditations'
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3 ideas
10. Modality / D. Knowledge of Modality / 1. A Priori Necessary
2301
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We know by thought that what is done cannot be undone [Descartes]
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10. Modality / D. Knowledge of Modality / 4. Conceivable as Possible / b. Conceivable but impossible
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Pythagoras' Theorem doesn't cease to be part of the essence of triangles just because we doubt it [Arnauld on Descartes]
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10. Modality / E. Possible worlds / 2. Nature of Possible Worlds / a. Nature of possible worlds
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Structural universals might serve as possible worlds [Forrest, by Lewis]
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