Full Idea
No sense accrues to a sign by the mere fact that it is used in one or more sentences, the other constituents of which are known.
Gist of Idea
A sign won't gain sense just from being used in sentences with familiar components
Source
Gottlob Frege (Logic in Mathematics [1914], p.213)
Book Reference
Frege,Gottlob: 'Posthumous Writings', ed/tr. Hermes/Long/White etc [Blackwell 1979], p.213
A Reaction
Music to my ears. I've never grasped how meaning could be grasped entirely through use.