However, when the police show up to investigate the scream they heard, the narrator hears the old man's heart beating faster and faster. The narrator realizes that he has no real reason to kill the old man he considered his friend and cannot accept the fact. Then the narrator tells the police what he did. This example is about obsession applied directly to the power of human nature to destroy, but it's not always that simple. Another example of the destructive power of human nature can be seen in Poe's “The Cask of Amontillado,” first published in Godey's Magazine and Lady's Book. (714) in this story Montresor is not obsessed with killing directly but with seeking revenge on Fortunato for actions not clearly stated. The only thing the story says is “I had borne Fortunato's thousand insults as best I could, but when he dared to insult me ​​I swore revenge. …In the end I would take revenge…” Then he says that “…he must not only punish but punish with impunity.” This is the exact root of human nature's power to destroy. He then connects his obsession with the concept of revenge to the concept of crossing the line and getting away with it. Montresor leaves