Though Montresor gets away with his crime, his soul is devoured by hate.
Montresor is motivated by revenge to punish Fortunato for his insult. Fortunato’s initial insult and Montresor’s reflections on his act of revenge are not revealed to the reader.
There is no indication in the story that Montresor is remorseful, and the reader is left to wonder why Montresor is confessing his crime and whether he is sorry for what he did.