In "The Raven," how does the speaker calling out Lenore's name into the darkness contribute to the poem's theme that obsession can lead to insanity?

The poet isn't mad about the bird tapping at the bust of Palas; he understands why Lenore is gone but he doesn't understand why he cannot see her again; the raven didn't fly out of the house - the poet says that the bird 'still is sitting.' What is bugging the narrator is that he will never get to see Lenore again, and the bird confirmed his suspicions.

Melville’s story is an allegory that conveys his criticism of Christian missionaries. Melville uses several biblical, scientific, mythological, and historical allusions to build his allegory. The lightning-rod man represents Christian missionaries, while the narrator represents Melville’s beliefs. According to him, missionaries are displacing and destroying the cultures they are attempting to convert rather than bringing them true spirituality. Although the narrator isn’t influenced by the lightning-rod man, he is saddened and worried to see his neighbors fall prey to the missionaries' trap. The narrator tries to dissuade his neighbors from believing in the lightning-rod man, who continues to thrive as he “trades with the fears of men.” Unlike many others of the time period, Melville believes in being God-loving, not God-fearing.

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