Sin's Disturbance of our Knowledge of Ourselves

This observation from Emil Brunner is relevant to the previous post:

The nearer anything lies to that center of existence where we are concerned with the whole, that is, with man's relation to God and the being of the person, the greater is the disturbance of rational knowledge by sin; the farther away anything lies from this center, the less is the disturbance felt, and the less difference is there between knowing as a believer or as an unbeliever. Revelation and Reason (Philadelphia, Pa.: Westminster, 1946), 383.