In "The Last Olympian" by Rick Riordan, tension rises as characters reflect on themes of loyalty and betrayal. One character expresses frustration over having saved another's life, only to find their trust shattered by the latter's actions. This statement highlights the complexities of relationships in high-stakes situations, where past sacrifices seem to be overlooked in favor of new ambitions.

The quote underscores a prevailing theme in the narrative: the struggle between personal motives and greater responsibilities. The betrayal of trust is juxtaposed against the backdrop of epic battles, emphasizing the emotional and moral dilemmas faced by the characters, particularly in the context of raising a formidable enemy like Kronos.