[In his rejection of objective, absolute Truth, Nietzsche] did not give up the idea that an individual might track home the blind impress all his behavings bore. He only rejected the idea that this tracking was a process of discovery. In his view, in achieving this sort of self-knowledge we are not coming to know a truth which was out there (or in here) all the time. Rather, he sees self-knowledge as self-creation. The process of coming to know oneself, confronting one’s contingency, tracking one’s causes home, is identical with the process of inventing a new language – that is, of thinking up some new metaphors. For any literal description of one’s individuality, which is to say any use of an inherited language-game for this purpose, will necessarily fail. One will not have traced that idiosyncrasy home but will merely have managed to see it as not idiosyncratic after all, as a specimen reiterating a type, a copy or replica of something which has already been identified.
— Richard Rorty, Contingency, Irony, and Solidarity