Full Idea
The problem of the definition of truth obtains a precise meaning and can be solved in a rigorous way only for those languages whose structure has been exactly specified.
Gist of Idea
A rigorous definition of truth is only possible in an exactly specified language
Source
Alfred Tarski (The Semantic Conception of Truth [1944], 06)
Book Reference
'Semantics and the Philosophy of Language', ed/tr. Linsky,Leonard [University of Illinois 1972], p.19
A Reaction
Taski has just stated how to exactly specify the structure of a language. He says definition can only be vague and approximate for natural languages. (The usual criticism of the correspondence theory is its vagueness).