Poe uses the motif of insanity to develop the theme of *as inherent in human nature.
Insanity is a motif used in almost all of Poe's stories. We can see this through a narrator who has little mental stability and lives on the edge of *or is immersed in pure insanity.
The narrator repeats references to insanity throughout the story, stressing the theme of how all human beings can succumb to madness, and how this is part of human nature.
This question is about the short story "The Imp of the Per*****"
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