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Ideas for 'Content Preservation', 'Philosophical Implications of Mathematical logic' and 'Monadology'

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2 ideas

5. Theory of Logic / C. Ontology of Logic / 1. Ontology of Logic

22329	Logic is highly general truths abstracted from reality [Russell, by Glock]
	Full Idea: In 1911 Russell held that the propositions of logic are supremely general truths about the most pervasive traits of reality, to which we have access by abstraction from non-logical propositions.
	From: report of Bertrand Russell (Philosophical Implications of Mathematical logic [1911]) by Hans-Johann Glock - What is Analytic Philosophy? 2.4
	A reaction: Glock says the rival views were Mill's inductions, psychologism, and Frege's platonism. Wittgenstein converted Russell to a fifth view, that logic is empty tautologies. I remain resolutely attached to Russell's abstraction view.

5. Theory of Logic / D. Assumptions for Logic / 3. Contradiction

2111	Falsehood involves a contradiction, and truth is contradictory of falsehood [Leibniz]
	Full Idea: We judge to be false that which involves a contradiction, and true that which is opposed or contradictory to the false.
	From: Gottfried Leibniz (Monadology [1716], §31)