To be honest, a very general teaching could jump by Hugo, Chaucer, Racine and even Baudelaire simple because you can replace them by similar great names or because they are much specific (too freench, too english, too classical, too drunk, etc) but even a general, the most general of all, cannt skip Cervantes. He is like the main name of fictional prose, he is the chapter of fictional prose. And Quixote and Pancho, are like that thread about memorable characters, the real one that should be a greek myth or be in the bible.
It would be akim of teaching physics without teaching matemathics in the process.