Many characters in Don Quixote serve as foils or opposites of other characters what role do these opposed pairs play in developing the novels themes?

The opposed pairs in Don Quixote serve to highlight contrasting qualities and beliefs, emphasizing the novel's exploration of reality versus illusion, idealism versus practicality, and romanticism versus cynicism. By juxtaposing characters like Don Quixote and Sancho Panza or Don Quixote and the Duke and Duchess, the novel delves into the complexities of human nature and perspectives on life. These opposed pairs ultimately contribute to the novel's thematic exploration of the nature of truth, perception, and the human condition.