In the newly-published book, Spark: How Creativity Works by Julie Burstein, Joyce Carol Oates, the prolific Princeton author, reveals aspects of the impulse that keeps her writing, often for 12 hours a day when working on a first draft, as well as the thinking and dreaming in which she immerses herself when preparing a novel. “It’s an intense and ineffable experience which is difficult to talk about,” says Oates, who doesn’t begin to write until she has “the whole thing in my head like a movie.”