“Kern unseres Wesen, ‘the core of our being'—it is not so much that Freud commands us to target this, as so many others before him have done with the futile adage 'Know thyself,' as that he asks us to reconsider the pathways that lead to it.
Or, rather, the 'this' which he proposes we attain is not a this which can be the object of knowledge, but a this—doesn't he say as much?—which constitutes my being and to which, as he teaches us, I bear witness as much and more in my whims, aberrations, phobias, and fetishes, than in my more or less civilized personage.
Madness, you are no longer the object of the ambiguous praise with which the sage furnished the impregnable burrow of his fear. And if he is, after all, not so badly ensconced there, it is because the supreme agent at work since time immemorial, digging its tunnels and maze, is reason itself, the same Logos he serves.”
Jacques Lacan, “The Instance of the Letter in the Unconscious, or Reason Since Freud,” Ecrits, 437-438