Paolo, 

     In your first paragraph, you say Huckleberry Finn (the book) is a "testament to
   the society of that era."  Normally when you say something is "a testament to" 
   something else, you are implying a positive evaluation of that something else.
   I don't think you meant that at all here, so your first paragraph is not very  
   clear as an introduction to what comes after that.  The topic sentence of 
   the second paragraph is not clear either:  "basis for which Huck changes" does
   not really make sense.  I think you meant something like "the process by which 
   Huck changes involves his decision making and his constant battle with morality."
   But this raises the questions I posed in the prompt -- what is that morality, 
   exactly how is his conscience "deformed" and where did the deformation come from?  
   You come at these indirectly by the end of the paper, but I don't think you ever
   really bring out the point that the basic conflict Huck has comes from the 
   fact that everything he has been taught by society (especially the Widow Douglas) is
   predicated on the idea that white people can own slaves as property.  So when
   Huck helps Jim, from that point of view he is stealing and he "knows" stealing 
   is wrong (at least in theory!). It would be better in this kind of paper to start 
   out with a clear statement of where you are going, then present the evidence that 
   lets you get to that conclusion. 

   There are a few other passages that you don't consider where Huck talks about how 
   he has to overcome his conscience to do something his heart knows is right.  It would 
   have been good, for instance, to look in detail at the passage on page 66 where Huck 
   is examining his conscience to try to understand why it is telling him what he is 
   doing with Jim is wrong.  You might have used what he said in that conversation with 
   himself to illustrate exactly how the "deformation" arose from Huck's life with the 
   Widow Douglas and how the pangs of conscience he feels are exactly like what we expect from 
   a person having a moral quandary.  The real pain he feels at these moments is what makes 
   it so powerful: He feels genuinely bad for making what we know is the right choice 
   because he thinks it is the wrong choice, based on his upbringing.  It would have been 
   good to show more of exactly how that plays out rather than just describing this in 
   general terms.  It's interesting that in fact in almost every (maybe every?) time 
   Huck uses the word "conscience," Twain is showing a new step in this development, so 
   you might have traced that progression in more detail. 

   Some minor points:
   Don't use things like "okay" (p. 1) or "gonna" (p. 3) in formal writing -- 
   "permissible" or "all right" or something along those lines would be better for 
   the first, and "going to" for the second.  

   Content/Evidence -- B

   Structure/Mechanics -- B+