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Ideas for 'works', 'Monadology' and 'Truth-makers'

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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)

5. Theory of Logic / E. Structures of Logic / 1. Logical Form

4730	For Aristotle, the subject-predicate structure of Greek reflected a substance-accident structure of reality [Aristotle, by O'Grady]
	Full Idea: Aristotle apparently believed that the subject-predicate structure of Greek reflected the substance-accident nature of reality.
	From: report of Aristotle (works [c.330 BCE]) by Paul O'Grady - Relativism Ch.4
	A reaction: We need not assume that Aristotle is wrong. It is a chicken-and-egg. There is something obvious about subject-predicate language, if one assumes that unified objects are part of nature, and not just conventional.