Full Idea
Our talk of propositions should not be regarded as anything more than a concise way of talking about equivalent sentences.
Clarification
Propositions are said to be the thought behind sentence
Gist of Idea
Talk of propositions is just shorthand for talking about equivalent sentences
Source
A.J. Ayer (The Central Questions of Philosophy [1973], IX.C)
Book Reference
Ayer,A.J.: 'The Central Questions of Philosophy' [Penguin 1976], p.208
A Reaction
Wrong, though I can see why he says it. We struggle to express difficult propositions by offering several similar (but not equivalent) sentences. What is the criterion for deciding his 'equivalence'?