Single Idea 11180

[catalogued under 9. Objects / D. Essence of Objects / 7. Essence and Necessity / b. Essence not necessities]

Full Idea

In the range of modal systems for which Saul Kripke has provided a semantics, no essentialist sentence is a theorem. Furthermore, there are models for which such sentences are demonstrably false.

Gist of Idea

Essentialist sentences are not theorems of modal logic, and can even be false

Source

Ruth Barcan Marcus (Essential Attribution [1971], p.188)

Book Reference

-: 'Nous' [-], p.188