Why may don quixote be seen as a crazy sane man and an insane one on the verge of sanity?

Don Quixote can be seen as a crazy sane man because his actions are motivated by noble ideals and a sense of chivalry, which are grounded in a sense of morality. On the other hand, he can also be viewed as an insane man on the verge of sanity because his delusions and actions are so extreme that they often border on irrationality and disconnect from reality. Ultimately, his character embodies a complex blend of both madness and rationality, making him a compelling and multifaceted literary figure.