There are several possible interpretations for what appears to be Don Quixote’s gradual recovery of sanity over the course of the novel. The simplest explanation may be that Don Quixote is insane in the beginning and his condition slowly improves. Second, it could be that, in his first passionate burst of commitment to knight-errantry in the First Part, he acts more rashly than he needs to and eventually learns to regulate his eccentric behavior. Alternatively, it could be that Don Quixote is consistently sane from the beginning and that Cervantes only slowly reveals this fact to us, thereby putting us in the same position as Don Quixote’s friends, who become aware of his sanity only by degrees. Or it could be that Cervantes began his novel intending Don Quixote to be a simple, laughable madman but then decided to add depth to the story by slowly bringing him out of his madness in the Second Part. Finally, it must be remembered that Cervantes never gives us a verdict on Don Quixote’s mental health: despite the evidence, the question is still open to interpretation.
Back at Elsinore, Hamlet explains to Horatio that he had discovered Claudius's letter with Rosencrantz and Guildenstern's belongings and replaced it with a forged copy indicating that his former friends should be killed instead. A foppish courtier, Osric , interrupts the conversation to deliver the fencing challenge to Hamlet. Hamlet, despite Horatio's pleas, accepts it. Hamlet does well at first, leading the match by two hits to none, and Gertrude raises a toast to him using the poisoned glass of wine Claudius had set aside for Hamlet. Claudius tries to stop her, but is too late: she drinks, and Laertes realizes the plot will be revealed. Laertes slashes Hamlet with his poisoned blade. In the ensuing scuffle, they switch weapons and Hamlet wounds Laertes with his own poisoned sword. Gertrude collapses and, claiming she has been poisoned, dies. In his dying moments, Laertes reconciles with Hamlet and reveals Claudius's plan. Hamlet rushes at Claudius and kills him. As the poison takes effect, Hamlet, hearing that Fortinbras is marching through the area, names the Norwegian prince as his successor. Horatio, distraught at the thought of being the last survivor and living whilst Hamlet does not, says he will commit suicide by drinking the dregs of Gertrude's poisoned wine, but Hamlet begs him to live on and tell his story. Hamlet dies in Horatio's arms, proclaiming "the rest is silence". Fortinbras, who was ostensibly marching towards Poland with his army, arrives at the palace, along with an English ambassador bringing news of Rosencrantz and Guildenstern's deaths. Horatio promises to recount the full story of what happened, and Fortinbras, seeing the entire Danish royal family dead, takes the crown for himself, and orders a military funeral to honor Hamlet.