He is haunted by a demon, a demon against which he feels powerless, because in its first manifestation it has no face, no name, nothing; and the words, the poem he makes, are a kind of exorcism of this demon.
T. S. EliotThe Rum Turn Tugger is a terrible bore: When you let him in, then he wants to be out; He's always on the wrong side of every door, And as soon as he's at home, then he'd like to get about.
T. S. Eliot