Abstract

The private language arguments exemplify the analogy: private ownership of experience; private knowledge of experience; private ostensive definition; the mereological fallacy; the 'beetle in the box'; and so on. The supposition that Wittgenstein's philosophy is primarily therapeutic obscures the extent to which therapy is only possible if one attains a grasp of the logical geography of the relevant part of the philosophical landscape. The analogy between clarifying and eradicating philosophical confusion and treating a disease is often linked to a related analogy that Wittgenstein drew in five different contexts in the 1930s, namely between his methods in philosophy and the method of treating mental illness by psychoanalysis. The idea of a private language is incoherent precisely because it fails to distinguish imagining a justification for using a word and justifying the use of a word in one's imagination.