For it still seemed to me “that it is not we who sin, but some other nature sinned in us.” And it gratified my pride to be beyond blame, and when I did anything wrong not to have to confess that I had done wrong. … I loved to excuse my soul and to accuse something else inside me (I knew not what) but which was not I. But, assuredly, it was I, and it was my impiety that had divided me against myself. That sin then was all the more incurable because I did not deem myself a sinner.
Augustine, Confessions, A. Outler, trans. (Dover: 2002), p. 77