In this world there is no beauty without ugliness, no joy without sorrow, no pleasure without pain. You cannot invent a thing that will provide benefit without threat of harm. Neither is there a human on this earth who does only good without fault.

From the time we ate from the Tree of Knowing Good and Evil, our world became a place of compounds and mixtures. And even before, this was in its plans.

Wherever you will find another form of good, you will find another sort of evil. Expel that evil, another will take its place. Rare it is, so rare, to find pure and simple goodness in a single being.

Therefore, do not reject any thing for the harm it may render, nor despise any man for the ugliness you find within him. Rather, use each thing towards the purpose for which G‑d conceived it, and learn from each man all the good he has to offer.