Don Quixote: Novel Summary: Book 2, Part 9-Book 2, Part 10

 Book 2, Part 9: Sancho, following her request, visits the duchess in her chamber.  Having read Book1, she questions him about making up his encounter with Dulcinea.  He responds by saying he believed Quixote to be mad and thus tried to appease his masters conscience.  The duchess picks up on the irony of the statement and has fun with Sancho, saying, “If Don Quixote is mad, crazy and cracked, and Sancho Panza, his squire, knows it, and yet serves and follows him, and relies on his vain promises, there is not doubt that he is more of a madman and a fool than his master.”
To this, Sancho gives a proverb-ridden, though embarrassed, defense of himself, citing his sentimental attachment to his master.  Later, however, she convinces him that Dulcinea really is enchanted.  It seems both the duke and duchess plan to play on Sancho and Quixotes gullibility for all its worth.  The couple organizes a pig hunt, where a “Devil” appears with six troops of enchanters and Dulcinea.  Even Merlin himself appears to disenchant the peerless lady.  But to do so, he commands Sancho to whip himself 3500 times.  Sancho reluctantly agrees to a restricted beating of himself at his “own pace.” This scheming, Cervantes asserts, gives the duke and duchess “more amusement than anything in the world.”
Book 2, Part 10: In this section Sancho writes a fairly comical letter to his wife, explaining his governorship and their future prospects of great wealth.  It appears the loyal squire is preparing to become governor of a certain island given him by the duke, and he plans to leave for the piece of land immediately.  Don Quixote is sad to see Sancho go, especially since he still has yet to complete the amount of lashes needed to disenchant Dulcinea, but the worthy knight gives him this advice: to fear God and to know thyself.
Quixote, now alone and hopelessly chaste, is depressed even further when two ladies tempt him by singing him a love song from below his window.