Three levels of meaninga

Philosophers approach the theory of meaning in three different ways, (1) Carnap, Ayer, Lewis, Firth, Hempel, Sellars, Quine, etc. take meaning to be connected with evidence and inference, a function of the place an expression has in one’s ‘ conceptual scheme ’ or of its role in some inferential ‘ language game (2) Morris, Stevenson, Grice, Katz, etc. take meaning to be a matter of the idea, thought, feeling, or motion that an expression can be used to communicate. (3) Wittgenstein (?), Austin, Hare, Nowell-Smith, Searle, Alston, etc. take meaning to have something to do with the speech acts the expression can be used to perform.