In Elizabeth Strout’s “Lucy by the Sea” (Random House), the fourth of her novels concerning a writer named Lucy Barton, the title character meets a man who tells her that he loved her memoir. His wife read the book, too, and thought it was “about mother-daughter stuff,” but he disagrees. “Maybe if you didn’t come from—well, from poverty,” he explains, “your mind just goes over it, and you think it’s about mothers and daughters, which it is, but it’s really, or it was to me, about trying to cross class lines in this country.” Lucy, who will soon consider this man her closest friend in Maine, where she has gone to ride out the pandemic, feels surpassingly gratified to hear this. “Thank you,” she replies, “for getting what that…
