Full Idea
Only what I may call the primary intention of an utterer is relevant to the (non-natural) meaning of an utterance.
Gist of Idea
Only the utterer's primary intention is relevant to the meaning
Source
H. Paul Grice (Meaning [1957], p.47)
Book Reference
'Philosophical Logic', ed/tr. Strawson,P.F. [OUP 1973], p.47
A Reaction
This sounds okay for simple statements, but gets really tricky with complex statements, such as very ironic remarks delivered to an audience of diverse people.