When the tapping persists, he opens the shutter of the window and discovers a raven, which flies into the room and lands above the door on a bust of Athena (Pallas in the poem), the goddess of wisdom and war in Greek mythology. It says “Nevermore” to all his thoughts and longings. The raven, a symbol of death, tells the man he will never again ("nevermore") see his beloved, never again hold her–
even in heaven.