Photo by Kyle Kielinski / Guardian / eyevine There aren’t many people who are considered both a bona fide giant of American letters and a master of oddball tweets, but such is the peculiar mind of Joyce Carol Oates. At 85, she has written so many books that it is difficult to work out the precise number: I counted 58 novels alongside several short story collections, volumes of poetry, and plays. She has been a finalist for the Pulitzer Prize for fiction five times, but never a winner. Oates also teaches writing and literature, and from 1978 to 2014 worked...