[Freud] always stresses what great forces in the mind, what strong prejudices work against the idea of psycho-analysis. But he never says what an enormous charm that idea has for people, just as it has for Freud himself. There may be strong prejudices against uncovering something nasty, but sometimes it is infinitely more attractive than it is repulsive.

Ludwig Wittgenstein, quoted in Normal Malcolm, Ludwig Wittgenstein: A Memoir, Oxford, 1958, p. 39