In the provided quote from "The Last Olympian," Hermes expresses a sense of resignation about the gods' ability to maintain their promises. He acknowledges that although they will make an effort to honor their oaths and possibly improve their ways, their history of forgetfulness suggests that they may ultimately fail. Hermes reflects on the nature of the gods, indicating a deep-rooted pattern that seems resistant to change, especially highlighting that Percy’s very existence stems from a broken promise.

Percy, however, counters Hermes' cynicism with a belief in the possibility of change, even for the gods. He challenges the notion that their nature is unchangeable, suggesting that transformation is still a viable option despite the gods' long history. This exchange underscores a central theme of the narrative: the tension between hope and the inherent flaws of character, illustrating a universal struggle between the desire for redemption and the weight of past failures.