Hugo said: "Once a masterpiece has been established, it will last forever. Which of his books did Hugo's words come from?

Once a masterpiece is established, it will last forever. The first poet succeeded and reached the pinnacle of success. As you climb up with him, even if you reach the same height, you will never be higher than him. Oh, your name is Dante, and his name is Homer. ——(French) Hugo

This is Hugo's evaluation of "Homer's Epic", not a famous quote from a certain book by Hugo.