They have not led lives of conflict-free tranquillity, but have struggled toward maturity. They have gone some way toward solving life’s essential problem, which is that, as Aleksandr Solzhenitsyn put it, “the line separating good and evil passes not through states, nor between classes, nor between political parties either— but right through every human heart.”

Brooks, David (2015-04-14). The Road to Character (Kindle Locations 170-173). Random House Publishing Group. Kindle Edition.