Full Idea
The basis on which the concepts of truth and objectivity depend for application is a community of understanding, agreement among speakers on how each is to be understood.
Gist of Idea
Truth and objectivity depend on a community of speakers to interpret what they mean
Source
Donald Davidson (Davidson on himself [1994], p.233)
Book Reference
'A Companion to the Philosophy of Mind', ed/tr. Guttenplan,Samuel [Blackwell 1995], p.233
A Reaction
Obviously all understanding is, in practice, an interpretation by a community, but that isn't what 'truth' means. We mean 'true independently of any community'.