"I still thought that it is not we who sin but some other nature that sins within us. It flattered my pride to think that I incurred no guilt and, when I did wrong, not to confess it. … I preferred to excuse myself and blame this unknown thing which was in me but was not part of me. The truth, of course, was that it was all my own self, and my own impiety had divided me against myself. My sin was all the more incurable because I did not think myself a sinner."