Our relation to others, even when we name it a relationship of love, is governed by the law that we should render evil for evil. We do not perceive in the other the One—that is, the good which he is not. Rather, we hold him liable for being what he is. . . . This making men liable for what they are is to render to them evil for evil. . . . It is this failure of apprehension which makes of our whole behaviour an inert mass of evil. Among this line of evil we all, without exception, move.
Karl Barth: Epistle to the Romans, xii. 16-20