In "Don Quixote," Cervantes explores the theme of vanity through his protagonist's interactions with beauty and flattery. The quote suggests that the character's self-assurance is deeply intertwined with his physical appearance and admiration from others. This vanity drives him to engage in grandiose endeavors, believing that his beauty warrants praise and recognition.

Cervantes critiques the superficial nature of such vanity, emphasizing its connection to a world where flattery reigns. The protagonist's journey reflects a broader commentary on how self-image and the pursuit of external validation can shape one's actions and perceptions, ultimately revealing the emptiness behind excessive pride.