1. Wittgenstein, L. Philosophical Investigations. 4th ed., ed. P. M. S. Hacker and J. Schulte, trans. G. E. M. Anscombe, P. M. S. Hacker, and J. Schulte. Chichester: Wiley-Blackwell, 2009, p. 4.
2. "....though psychoanalysis was not a major theme of Wittgenstein’s work, it was a theme that Wittgenstein could not leave alone, Edward Harcourt, "Wittgenstein and Psychoanalysis", in John Hyman and Hans-Johann Glock (eds.), The Blackwell Companion to Wittgenstein (Oxford: Blackwell, 2017), pp. 651-66
3. See for example Gustav Bergmann's article, in which he coined the term "the linguistic turn” and attributed the revolution to Wittgenstein's book: (Bergmann, "Logical positivism, language, and the reconstruction of metaphysics", in Rorty, R. (ed.). The linguistic turn. ( The University of Chicago press, 1967: 63-71, p. 63.
4. "A simile that has been absorbed into the forms of our language produces a false appearance which disquiets us" (Wittgenstein 2009, &112)
5. "The confusions which occupy us arise when language is, as it were, idling, not when it is doing work" (Wittgenstein 2009, &132)