In Poe's "The Cask of Amontillado," there are several examples of irony. When Montresor explains that revenge is not good enough, but that the victim must know he is being punished, Montresor never explains his actions to his victim, so essentially Fortunato dies without ever knowing why.
I must not only punish but punish with impunity. A wrong is unredressed when retribution overtakes its redresser. It is equally unredressed when the avenger fails to make himself felt as such to him who has done the wrong.
We might find some irony in that Fortunato becomes increasingly more drunk. As a connoisseur of fine wines, and someone who appreciates good wine when it is available, one might think getting him drunk would be more difficult.
For as intelligent as Montresor presents himself to be (and an aristocrat, as well), it's ironic that he does not know what a "Freemason" is—the secret organization known as the Freemasons previously made up of stone masons. Montresor wields his trowel believing...
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