There are only two forces at work in this world- black and white. Only people are grey.

Evil events from evil causes spring. — Aristophanes

Evil and good are God&#039;s right hand and left. — Francis Bailey

Woe unto them that call evil good  and good evil. — Bible

Of two evils choose the least. — Erasmus

What is evil?  -  Whatever springs from weakness. — Friedrich Nietzsche

Never throw mud. You may miss your mark  but you must have dirty hands. — Joseph Parker

Be not overcome of evil  but overcome evil with good. — Romans

Evil often triumphs  but never conquers. — Joseph Roux

The evil that men do lives after them  The good is oft interred with their bones. — William Shakespeare

As sure as God is good  so surely there is no such thing as necessary evil. — Robert Southey