Grice, "a decent chap"

As he roughly self-describes, Chapman has it (p. 102), "in one rough note".

On the other hand, there's Loar thinking they are 'empirical generalisations over functional states"!

Refs.

Loar, Mind and Meaning on 'conversational maxims'
Grice, 'maxims' as "special cases of what a decent chap should do"
Speranza, "And then he is amusingly _counter-arguing_ 'against' the 'decent chap', too!