“Find good in what the world says is evil.”

Balsamo the Magician (or The Memoirs of a Physician) by Alex. Dumas (1891)

The Devil's Notebook (1992)

Source: The Essays: A Selection

The Tragic Sense of Life (1913), X : Religion, the Mythology of the Beyond and the Apocatastasis

Will and Mary in Ch. 33 : Marzipan
His Dark Materials, The Amber Spyglass (2000)
Context: "When you stopped believing in God, did you stop believing in good and evil?"
"No. But I stopped believing there was a power of good and a power of evil that were outside us. And I came to believe that good and evil are names for what people do, not for what they are. All we can say is that this is a good deed, because it helps someone, or that's an evil one, because it hurts them. People are too complicated to have simple labels."

The Black Coat (2013)

Sí, eso es el bien: perdonar el mal. No hay etro bien.
Voces (1943)