|Private language: according to L. Wittgenstein a private language, i.e. a language which an individual develops only for himself and uses to express his feelings, is not possible. (See L. Wittgenstein, Philosophical Investigations, 1953, § 243, 258). You cannot give yourself instructions. You could not even understand the language. See also rule following, Kripke's Wittgenstein, priviledged access, Wittgenstein's beetle.|
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It makes no sense to say that there is something about which we cannot talk.
Private Language/Dummett: E.g. assuming there was a new language similar to Esperanto: "interlingua". Invented by a speaker for purely private use: it is not subject to Wittgenstein s verdict against a private language, because the privacy of this language is only a contingent feature. It is just de facto known to only one person. Wittgenstein s arguments are directed against the possibility of an essentially private language. (> Private Language).
But Interlingua would not be independent from other languages, it would not exist in a vacuum.
Private Language: WittgensteinVs - DummettVsWittgenstein: an artificial private language is possible and can be learned.
Ursprünge der analytischen Philosophie Frankfurt 1992
Wahrheit Stuttgart 1982