more from Gottlob Frege

Single Idea 18936

[catalogued under 5. Theory of Logic / I. Semantics of Logic / 6. Intensionalism]

Full Idea

Frege moved from an extensional semantic theory (that countenances only linguistic expressions and their referents) to an intensional theory that invokes in addition a notion of sense.

Gist of Idea

Frege moved from extensional to intensional semantics when he added the idea of 'sense'


report of Gottlob Frege (On Sense and Reference [1892]) by Sarah Sawyer - Empty Names 2

Book Reference

'Routledge Companion to Phil of Language', ed/tr. Russell/Graff Faria [Routledge 2015], p.154

A Reaction

This was because of Frege's famous 'puzzles', such as the morning/evening star. Quine loudly proclaimed himself an 'extensionalist', implying that he had extensional solutions for Frege's Puzzles.