There is a famous quote, "Whoever fights monsters should see to it that in the process he does not become amonster. And if you gaze long enough into an abyss, the abyss will gaze back into you." -Friedrich Nietzsche
One of Hatsumi Soke's well known quotes is: "I'm not teaching you to fight, I'm teaching you to control evil. - Dr. Masaaki Hatsumi
This is one of the many things that sets the Bujinkan apart from many other styles of martial arts. The way we learn this art from Soke is a transmission of lessons and a heritage through history. Instead of merely learning to punch and kick and to cause harm to people, part of our training incorporates understanding the warrior ways of living a peaceful life and only using our warrior art when it is unavoidable.