Holly Black said this quote

“ I really love folklore. I had read a lot of faerie folklore that informed the books I wrote. I also really love vampire folklore; my eighth grade research paper was on [it]. [With this project,] it was really helpful to think about the way you can use language. When you're writing about faeries, you can't call anyone fey; there are certain words that become forbidden because they're actualized in what faeries do. When you write about vampires, you could think the same way about things like the word red or hunger--it's interesting to think of the ways that the words have double meanings, or different meanings that shifted. ”