This is such a common thing. Other examples include: the windmills in Don Quixote; ‘history is a nightmare from which I am trying to awake’ and ‘God [is] a shout in the street’ from Ulysses. I’ve actually heard that, despite his incessant praising of Joyce, when Hemingway died they found his copy of Ulysses and most of the pages after the start were literally still uncut. People like making references to things they’ve only read the start of lol