Ideas from 'On Sufficient Reason' by Gottfried Leibniz [1686], by Theme Structure

[found in 'Leibniz Selections' by Leibniz,Gottfried (ed/tr Wiener,Philip P.) [Scribners 1951,]].

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2. Reason / B. Laws of Thought / 1. Laws of Thought
Necessities rest on contradiction, and contingencies on sufficient reason
26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / c. Essence and laws
Each of the infinite possible worlds has its own laws, and the individuals contain those laws