Abstract
It is a commonplace among certain recent philosophers that there is no such thing as the essence of anything. Nietzsche, for example, asserts that things have no essence of their own, because they are nothing but ceaselessly changing ways of acting on, and reacting to, other things. Wittgenstein, famously, rejects the idea that there is an essence to language and thought – at least if we mean by that some a priori logical structure underlying our everyday utterances. Finally, Richard Rorty urges that we ‘abandon … the notion of “essence” altogether’, along with ‘the notion that man's essence is to be a knower of essences’.