While moral and honorable in their own time and culture, one must interpret them in the light of our current times and social norms. In America, it is frowned upon to decapitate rivals with a sword.
"As one man can defeat 10 men, so can 1,000 men defeat 10,000," wrote Musashi. "However, you can become a master of strategy by training alone with a sword, so that you can understand the enemy's stratagems, his strength and resources, and come to appreciate how to apply strategy to beat 10,000 enemies."
I mention these classics because most police officers I know have never read and studied them. Many of the members of revolutionary politically radical groups, as well as members of criminal gangs such as the Mexican Mafia, Black Guerrilla Family, Aryan Brotherhood, and Nuestra Familia have. And to these classic philosophical works, add the Christian Bible.
After a very stimulating and enlightening conversation with one of these well read, self-educated, criminally sophisticated, prison gang members, I noticed that he had a very good working knowledge of the Bible and could quote from it at length. When I questioned how he came about this knowledge he answered, "Yeah, I studied the Bible quite a bit. I just don't believe in it."
This illustrates my point. The lack of knowledge is not the problem; it's the lack of wisdom that's at fault. His mind improved, but his heart remained evil. I know a former Aryan Brotherhood leader who obtained a doctorate while incarcerated in state prison. I know prison gang members fluent in multiple difficult languages and dialects. I know several who could teach college courses on the books I've mentioned. If you do nothing to change a criminal's philosophy and moral code of conduct, getting him a diploma only adds to his criminal sophistication.