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Proposition quotes

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Ludwig Wittgenstein
“But all propositions of logic say the same thing. That is, nothing.” Ludwig Wittgenstein, Tractatus Logico-Philosophicus
David Hume
“That the sun will not rise to-morrow is no less intelligible a proposition, and implies no more contradiction than the affirmation, that it will rise.” David Hume, An Enquiry Concerning Human Understanding
John Stuart Mill
“The actual existence of the subject of the proposition is therefore only apparently, not really, implied in the predication, if an essential one: we may say, A ghost is a disembodied spirit, without believing in ghosts.” John Stuart Mill, A System Of Logic, Ratiocinative And Inductive

Related topics

contradiction logic affirmation subject predication

Related authors

David Hume (1)
Ludwig Wittgenstein (1)
John Stuart Mill (1)

Related sources

Tractatus Logico-Philosophicus (1)
An Enquiry Concerning Human Understanding (1)
A System Of Logic, Ratiocinative And Inductive (1)
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