When her husband died two years ago, Siri Hustvedt (Minnesota, 1955) began writing Ghost Stories (Seix Barral/Edicions 62), a book that helped her face the abyss of “vanished time,” start the grieving process, and adjust to life alone after 43 years of marriage. If the one who left, a victim of cancer that the author describes with harshness but without losing her sense of humor, had not been Paul Auster, it would be the same, she admits, because this work is not a biography of the novelist, but a lost love song. “The most painful reality in this world is not loving someone and losing them to death, but the inability to love,” she argues.