It's Aalllliiiivvveee.

The poem in this chapter is credited via footnote to Coleridge's "Ancient Mariner."

Like one who, on a lonely road,/

Doth walk in fear and dread,/

And, having once turned round, walks on,/

And turns no more his head;/

Because he knows a frightful fiend/

Doth close behind him tread.