The basic idea in Moretti’s work is that, if you really want to understand literature, you can’t just read a few books or poems over and over (“Hamlet,” “Anna Karenina,” “The Waste Land”). Instead, you have to work with hundreds or even thousands of texts at a time. By turning those books into data, and analyzing that data, you can discover facts about literature in general—facts that are true not just about a small number of canonized works but about what the critic Margaret Cohen has called the “Great Unread.”