Inner Factors of Bujutsu
Sophisticated weapons and complex techniques (the outer factors of bujutsu…), although admittedly impressive, might be compared to the visible part of an iceberg which catches the eye, and often the imagination, but is only a projection of the power hidden below in the depths of the icy waters. Although the possession of a certain weapon and basic training in its functional use often satisfied the individual bujutsu practitioner (bujin) of limited ambition and imagination, there were others, many others, who perceived, beyond those outer factors of the various arts, other, more complex factors, less evident perhaps to the naked eye but no less important in determining the practical efficiency of those weapons and their relative techniques. Failure to perceive these inner factors could prove disastrous, as it did for many a complacent bujin who had been trained only in the technical ways of handling a spear, a sword, or any other weapon, including his own anatomy. Centuries of experience in the ancient art of combat, in fact, had confronted the bujin and his sensei with a series of demanding questions, among which the following were of primary importance: When should an opponent be engaged? How was he (as well as oneself) to be controlled? What type of energy was to be used, and how employed to the best advantage? Finally, what was to be the bujin‘s motivation? All these considerations involved factors of a decidedly interior nature which activated the techniques of bujutsu from within, provided them with an effective source of power, and justified their use in a manner calculated to provide the bujin with controlled determination, calmness, and clarity of purpose, as well as with a moral justification to sustain him in combat. Bujutsu masters confronted these interrogatives (and others), explored their range and depth, and tried to provide satisfactory answers for themselves and their disciples.
— Secrets of the Samurai, p. 375
This is the kind of sensei I see—and attempt to role-play—Xenograg as.