The paradox that if a philosophical analysis is correct, then, since it substitutes one term or phrase for another with the same meaning, it must be trivial. If we present an analysis in the form ‘to be an F is to be a G’, then if the sentence is true it should mean the same as the sentence ‘to be an F is to be an F’ which is clearly trivial. The challenge is to show how such a claim could be conceptually illuminating.