How ever, if anyone does approve of speaking of helief of a proposition at all and of speaking of a proposition in turn as meant by a sentence, then certainly he cannot objectto our semantical reformulation believes true S' on any special grounds of obscurity; for, believes true S' is ex plicitly definable in his terms as believes the proposition meant by Similarly semantical reformulation of similarly the tetradic and higher cases; and similarly for wishing, striving, and other propositional attitudes.