“For all its critical analysis philosophy has not yet managed to root out its psychopaths….Philosophy still has to learn that it is made by human beings and depends to an alarming degree on their psychic constitution. In the critical philosophy of the future there will be a chapter on ‘The Psychopathology of Philosophy.’ Hegel is fit to bust with presumption and vanity. Nietzsche drips with outraged sexuality, and so on. There is no thinking qua thinking, at times it is a pisspot of unconscious devils, just like any other function that lays claim to hegemony. Often what is thought is less important than who thinks it. But this is assiduously overlooked. Neurosis addles the brain of every philosopher because he is at odds with himself. His philosophy is then nothing but a systematized struggle with his own uncertainty.”
Carl Gustav Jung, letter to Arnold Künzli, February 28, 1943, in C.G. Jung, Letters, vol. I: 1906-1950, Princeton University Press, 1973.