Which lines from “the raven” by edgar allan poe show that the speaker has lost hope of ever being able to move on and recover from the pain of losing lenore?

The final lines of the poem actually show that he has given up and has lost all hope where he says 

And the lamp-light o'er him streaming throws his shadow on the floor: And my soul from out that shadow that lies floating on the floor     Shall be lifted—nevermore!

The narrator's soul will never recover from the loss.