On delusion
“Freud’s Copernican revolution involves the decentering of the human subject, a decentering Lacan sees as central, associating it with Arthur Rimbaud’s Je est un autre (” I is an other”). The center is not the ego or self (two terms that I use interchangeably here), for the ego or self is always fundamentally deluded.”
In Bruce Fink’s “Lacan to the Letter: Reading Écrits Closely”, University of Minnesota Press, Minneapolis-London (2004)