This contrast, between a celebrated and largely unread classic [Alessandro Manzoni, The Betrothed, 1827] and an enduringly popular classic [Carlo Collodi, The Adventures of Pinocchio,1881], shows that a key to a work’s ongoing celebrity is that dangerous term: universality. We hold the word with suspicion because it tends to elevate one group at the expense of another; what’s supposedly applicable to all is often only applicable to a certain group that presumes to speak for everybody else. And yet certain elements and experiences do play a major role in most of our lives: falling in love, chasing a dream, and, yes, transitioning as Pinocchio does from childhood to adolescence. The classic that keeps on being read is the book whose situations and themes remain relevant over time—that miracle of interpretive openness that makes us feel as though certain stories, poems, and plays are written with us in mind.In his Defence of Poetry, Percy Bysshe Shelley writes that great literature is “a fountain forever overflowing with the waters of wisdom and delight; and after one person and one age has exhausted all its divine effluence … another and yet another succeeds, and new relations are ever developed.” Shelley understood that some works have the magical capacity to resist closure—they read us as much as we read them, by revealing what is most important to our lives individually and our age collectively. Each great book, Shelley writes, is “the first acorn, which contained all oaks potentially”: the meaning we derive from literature changes over time, though the words on the page remain the same.