“The main advice I would have is to be really easy on yourself, to shut off as much as you can the voice that’s saying maybe you’re wasting your time, and maybe everything that you do is stupid.” Elif Batuman, a finalist for the 2018 Pulitzer Prize for her debut novel, The Idiot (Penguin Press, 2017), talks to Granta about the literary model of Charles M. Schulz’s Snoopy and the blurred boundary between fiction and nonfiction.