Full Idea
Never lose sight of the distinction between concept and object.
Gist of Idea
Never lose sight of the distinction between concept and object
Source
Gottlob Frege (Grundlagen der Arithmetik (Foundations) [1884], Intro p.x)
Book Reference
Frege,Gottlob: 'The Foundations of Arithmetic (Austin)', ed/tr. Austin,J.L. [Blackwell 1980], p.-3
A Reaction
Along with 8414 and 7732, we have the three axioms of modern analytical philosophy. Russell uses this distinction from Frege to attack Berkeley's idealism (see Idea 1103). The idea is strong in causal theories of reference. We realists love it.
Related Ideas
Idea 8414 Keep the psychological and subjective separate from the logical and objective [Frege]
Idea 7732 Never ask for the meaning of a word in isolation, but only in the context of a proposition [Frege]
Idea 1103 'To be is to be perceived' is a simple confusion of experience with its objects [Russell on Berkeley]