In the classic novel "Don Quixote" by Miguel de Cervantes Saavedra, the protagonist takes on a chivalric identity that leads him to clean and polish a suit of armor. This act symbolizes his desire to emulate the knights of old, embodying the ideals of honor and bravery. His actions reflect a deep commitment to his newfound purpose as a self-proclaimed knight-errant.

The armor serves as a tangible representation of Quixote's aspirations and delusions, highlighting the contrast between his romantic vision and the practical realities of his life. As he prepares to embark on his adventures, the cleaning of the armor signifies his transformation, blending humor and pathos in the story's exploration of dreams versus reality.