“Good and evil both increase at compound interest.”

“If God is wiser that we His judgement must differ from ours on many things, and not least on good and evil. What seems to us good may therefore not be good in His eyes, and what seems to us evil may not be evil.”

“Evil can be undone, but it cannot "develop" into good.”

“Do not let us mistake necessary evils for good.”

“Thomas Aquinas said of suffering, as Aristotle had said of shame, that it was a thing not good in itself; but a thing which might have a certain goodness in particular circumstances. That is to say, if evil is present, pain at recognition of the evil, being a kind of knowledge, is relatively good.”

“Free will, though it makes evil possible, also makes possible any love or goodness or joy worth having.”

“The human spirit will not even begin to try to surrender self-will as long as all seems to be well with it. Now error and sin both have this property, that the deeper they are the less their victim suspects their existence; they are masked evil. Pain is unmasked, unmistakable evil; every man knows that something is wrong when he is being hurt.”