This paper is about Putnam’s proposal of an ethic, and more generally, a philosophy without ontology. In his last books, converging with Cora Diamond’s point of view, Putnam seems to go beyond the classical split between non-cognitivism and moral realism, in favour of a realism of a realistic spirit: not a realism of common sense (that would be another thesis) but an ordinary, natural, realism, that considers the expression of morality in our language and usages.