“Pallas” refers to Pallas Athena, the Greek goddess of wisdom. The bust of Pallas in the narrator’s chamber represents his interest in learning and scholarship, and also can be taken as representing rationality in general and his own rational, sane mind in particular. The Raven, by landing on the bust when it flies into the room, signifies a threat to the narrator’s reason and the ability of rationality to analyze and understand the reasons (if any) behind the Raven’s coming and its message. That the Raven stays on top of the bust of Pallas at the end of the poem, never flitting, suggests the dominance of irrationality and fear over reason in general, and, more particularly, that irrationality has taken up a permanent home in the narrator’s formerly rational mind.
Pallas Quotes in The Raven
And the Raven, never flitting, still is sitting, still is sitting
On the pallid bust of Pallas just above my chamber door…