Combining Texts

Ideas for 'Causes and Counterfactuals', 'Letters to Queen Charlotte' and 'Naming and Necessity preface'

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3 ideas

9. Objects / D. Essence of Objects / 7. Essence and Necessity / b. Essence not necessities

13189

A necessary feature (such as air for humans) is not therefore part of the essence [Leibniz]

9. Objects / F. Identity among Objects / 1. Concept of Identity

16981

With the necessity of self-identity plus Leibniz's Law, identity has to be an 'internal' relation [Kripke]

9. Objects / F. Identity among Objects / 8. Leibniz's Law

4942	The indiscernibility of identicals is as self-evident as the law of contradiction [Kripke]