The Millions does this every year apparently and the one I read just now was a short and sweet reflection on explorations of morality (or lack thereof) in novels.
Morality in fiction—or maybe better put, talking about morality in fiction—has been somewhat unfashionable for a long time, but nonetheless most great books possess a kind of morality. I’m not using “morality” to mean a lesson, but rather an articulable if complex framework of moral meaning that that both situates and illuminates a novel’s events and characters. All novels are miniature, idealized versions of the world (even if the idealization is negative), and a novel’s moral intelligence is what allows the reader to understand how this idealization corresponds with the actual. It is what the book thinks about the book.