Takamatsu Toshitsugu, Dr. Hatsumi's teacher and 33rd generation Grandmaster of the Togakure ryu Ninjutsu, had a dream one evening which proved to become the foundation of his philosophy in the Martial Arts. In this dream, a demon and a butterfly engaged in battle; quite an uneven conflict. The demon was strong, huge, and had great powers. The butterfly was small and appeared to have no capabilities other than those of the average insect. And yet, when the enraged demon attempted to swat the flitting butterfly, it easily avoided his charges. Moving here and there, ever out of reach, the butterfly fit completely into the demon's motion. His strength useless, and choking on his own anger, the demon fell to the ground while the butterfly floated away, free and unharmed.
This is taijutsu (body skills) to be able; in other words, to adapt to your opponent's energy and movement so complete that he has no capability to injure you, or ultimately, to affect you in any way. The pinnacle of this ability is to simply not be there whenever any action potentially harmful to yourself is carried out.
Once Masaaki Hatsumi was asked: "What would you do if a sniper shot at you from half a mile away while you were going out your door" The answer was simple: " I would never walk through that door at that time."