Full Idea
Logic does not study formal languages for their own sake, which is formal grammar. Logic evaluates arguments, and primarily considers formal languages as interpreted.
Gist of Idea
Logic studies arguments, not formal languages; this involves interpretations
Source
JC Beall / G Restall (Logical Pluralism [2006], 2.1)
Book Reference
Beall,J/Restall,G: 'Logical Pluralism' [OUP 2006], p.8
A Reaction
Hodges seems to think logic just studies formal languages. The current idea strikes me as a much more sensible view.
Related Idea
Idea 10282 Logic is the study of sound argument, or of certain artificial languages (or applying the latter to the former) [Hodges,W]