Originally, the story included an epigraph with a stanza from Henry Wadsworth Longfellow’s 1838 poem “A Psalm of Life,” subtitled “What the Heart of the Young Man Said to the Psalmist”:

Poe’s story shows its readers the importance of mental health. The story demonstrates that mental illness can drive a person to the vilest acts. Psychological problems can lead individuals to act dangerously without any motive. The narrator, in the story, suffers from some mental problems which lead to his destruction.

He, time and again, denies the fact that he suffers from mental illness but his awkward actions prove that he suffers from some psychological problem. He is obsessed with killing the old man for no apparent reason and scrutinizes him for seven successive nights. The narrator, being paranoiac, kills the old man out of fear but that is not an acceptable reason.

Furthermore, he also enjoys the moment when he suffocates the old man, holding the bed sheets tightly over his face. This event makes him a sadist; who enjoys inflicting pain on others. This event also shows that he has some psychological problems. Through these events, Poe demonstrates the idea that an individual’s psychological health is as important as his physical health.