The kind and humble owner of a secondhand bookshop, Mr. Sempere is Daniel’s father. While the novel’s fathers are often dogmatic and controlling, using their children to fulfill their own ends, Mr. Sempere is unusually loving and understanding, and he and Daniel have a close relationship. Still, Daniel sometimes finds it hard to relate to his father, who has never completely recovered from his wife’s death and prefers to live among his memories than in the present. Mr. Sempere contrasts with Daniel’s other figures, like Fermín, Barceló, and Carax, who seem like more worldly and powerful men; Daniel also keeps his investigations secret from his father as long as possible, which makes them distant from each other. However, at the end of the novel they reconcile, and Daniel follows in his father’s footsteps as a bookseller. Daniel’s ultimate resemblance to his father, and his decision to bring his son to the Cemetery of Forgotten Books just as his father once brought him, is a vindication of Mr. Sempere as a man and a father.