Why is Don Quixote both ridiculous and respectable?

This character has a distinct duality. He is not only insane, crazy and ridiculous, but also represents lofty moral standards, fearless spirit, heroic behavior, firm belief in justice and loyalty to love. Don Quixote divorced from reality and indulged in fantasy, and his mind was full of strange stories in knight novels. He went to exorcise demons himself, and as a result, he made countless jokes. He imagined himself as a knight, sheep as an army, windmills as giants, and fought against them. As a result, it is conceivable that he asked for it and was seriously injured. His behavior is ridiculous. And his starting point is to uphold justice. He hated slavery and oppression, especially cherished freedom, and took it as his duty to eradicate rape and relieve suffering. He loves freedom and justice and dares to fight selflessly for justice. He not only has ideals, but also shows a dedication and fighting spirit to realize them, transform reality, persist in them regardless of personal safety and failure ... From these aspects, he is respectable. The crazier he is, the greater the damage he causes, the more distinct his excellent qualities, the more divorced his ideals from reality, and the more contradictory his noble motives are with his wrong methods and useless behaviors. Therefore, there are still tragic factors behind his ridiculous drama image, and he is the embodiment of an idealist.