In Poe's celebrated short story "The Cask of Amontillado," Montresor does not specifically state his reason for seeking revenge on Fortunato. In the opening line of the story, Montresor comments that he has endured a "thousand injuries" from Fortunato but when his enemy "ventured upon insult," he decided to exact revenge. These "thousand injuries" are ambiguous, suggesting that the narrator may be unreliable. As the story progresses, it becomes apparent that both Montresor and Fortunato are prideful men who hail from established families. Fortunato is described as a respectful, feared man who prides himself on his connoisseurship of rare wines and does not hesitate to insult others.
When Montresor interacts with Fortunato during the carnival, he elaborates on his recent purchase of Amontillado. He mentions that he plans on seeking Luchesi's expertise to authenticate the wine. Fortunato responds by saying,
"Luchesi cannot tell Amontillado from Sherry" (Poe, 4).
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