Don Quixote and Sancho undergo a change also.

In the First Part, Don Quixote has no character or individuality whatever.

He is nothing more than a crazy representative of the sentiments of the chivalry romances.

In all that he says and does he is simply repeating the lesson he has learned from his books; and therefore, it is absurd to speak of him in the gushing strain of the sentimental critics when they dilate upon his nobleness, disinterestedness, dauntless courage, and so forth.

It was the business of a knight-errant to right wrongs, redress injuries, and succour the distressed, and this, as a matter of course, he makes his business when he takes up the part; a knight-errant was bound to be intrepid, and so he feels bound to cast fear aside.