I like Updike’s nonfiction best, especially the volumes of criticism that added up like sand in a river delta. Reading those books, you never know what you’re going to find. The reason is this: No matter what Updike’s books accomplished, he was, above all, a maker of sentences, one of the very best. You can read him for his books, but it’s better to read him for his sentences, any one of which — anywhere — can rise up to startle you with its wry perfection.