I think this discussion can be broken into two different themes. Semantics. Does philosophy play a part in MA. Sure, even if it is simply, I train to survive a fight, protect myself or others, etc to more complex themes like finding your spiritual center and not harming people. Or is it when I get in a fight I want to stay off the ground, run like hell when I get a chance, escalate the weaponry, etc. Books are going to be bushido based: Hagakure, book of five rings, etc. They could also be warriorhood based - Living the Martial way. Strategic vs tactical. The strategic is what you develop to rationalize what you do in the tactical situation.