Zentmeister
That's not normal its could be either borderline personality disorder... narcissistic personality disorder or plain old run of the mill psychopathy. Violence and destructive behavior added with lying without emotion or guilt in everyday social settings is symptomatic of one of these mental issues...
Another chapter, another example of what not to do, a simple historical explanation: the printing press caused revolutionary changes within medieval society, including the translation of the Bible into common language, which was a direct cause of the rise of Protestantism, specifically in the Germanic states.. A simple know your enemy and the weapons he uses, his "invention" of the printing press and his desire to influence the church from within could explain the existence of this bible in German in his possession, a fact almost impossible to happen in this time period, a simple explanation like this makes it logical and important to the plot of the story.