From East of Eden by John Steinbeck, my favourite novel this year:

“A child may ask, “What is the world’s story about?” And a grown man or woman may wonder, “What way will the world go? How does it end and, while we’re at it, what’s the story about?”

I believe that there is one story in the world, and only one… Humans are caught — in their lives, in their thoughts, in their hungers and ambitions, in their avarice and cruelty, and in their kindness and generosity too — in a net of good and evil… There is no other story. A man, after he has brushed off the dust and chips of his life, will have left only the hard, clean questions: Was it good or was it evil? Have I done well—or ill?

[…]

We have only one story. All novels, all poetry, are built on the never-ending contest in ourselves of good and evil. And it occurs to me that evil must constantly respawn, while good, while virtue, is immortal. Vice has always a new fresh young face, while virtue is venerable as nothing else in the world is.”