 Widely regarded as one of the greatest philosophers of the twentieth century, Ludwig Wittgenstein (1889–1951) was also one of the most controversial and difficult. Wittgenstein famously argued that “meaning is use” – that our words mean what they do by virtue of the role they play in our discourse. Moreover, he argued that words are used in more than one way, and that it is a mistake to “sublime the logic” of our language – i.e., to treat any single function of language as paradigmatic. “Think of the tools in a tool-box: there is a hammer, pliers, a saw, a screw-driver, a rule, a glue-pot, nails and screws. – The functions of words are as diverse as the functions of these objects” (1958, I, §11).