_________ tells Heathcliff: “If I were you, I’d go stretch myself over her grave and die like a faithful dog. The world is not worth living in now, is it?”

The quote you are referring to is from Emily Brontë's novel "Wuthering Heights." The character who tells Heathcliff this line is Nelly Dean, who serves as the housekeeper and acts as a narrator for part of the story. This moment reflects the intense emotions and turmoil that the characters experience throughout the novel, particularly in relation to love and loss. Nelly's comment underscores Heathcliff's deep anguish over Catherine Earnshaw's death, highlighting the themes of obsession and despair that permeate the narrative. The tragic tone of this line serves as a powerful reflection of Heathcliff's inner turmoil and the overarching bleakness of the story.