In the movie the first scene is the awaiting of a trial of judgment and people in a dark and wicked dungeon. I think that this is a good interpretation of the preface of the book. Our current generation minds cannot fathom the depths of darkness of the time of the Spanish Inquisition and how a book such as this, with real and loving hope that people might be won from their deceptions into true and wonderful salvation, could have landed the writer into the dungeon for it's heretical implications. We cannot fathom such a thing. It is true, though. I think that they were merciful to his state of physical infirmity and thus took his desire to win them as a sort of court jest. He wrote this in such a way. I believe that Cervantes addresses the powers that be and drew them all into the reality that we are all poor pilgrims upon the earth awaiting death and the judgment. The question is, are those who take their soul's condition as a serious thing, fools or doctors of our culture? His questioning this thought has influenced our "common grace" to this day.
Although the scene of the dungeon is an intrusion from a modern translation, I think it useful to orient us to the day that Cervantes was addressing. His eye was ever on "That Day" and the "Eternal Judgment". God allowed him that hearing from his "Felix" and I believe that we owe some semblance of our common betterment to his mighty wielding of his wonderful pen! Please don't miss its benefits to our day.I simply cannot tell if he knew that he was beautifying the Church.
Still there is an ever burning question, does Don Quijote love right or cheese?