Boris Akunin. Black city (№ 140260)

Adequately unable to assess yourself to only people of average moral character. A good person does not feels good, because hard on yourself and never satisfied with myself. But bad people do not know that it is bad. Because his point of reference comes from his "navel": what for him is good, and fine, and therefore, all his actions are perfect, because a bad person is always guided by selfish interests and no detriment will never launch.