I once read (was it Bruce Lee who wrote it? Can't remember) that "martial arts without spirit (philosophy) is simply violence". I was thinking about this as I watched MMA on tv with my son. There was plenty of 'martial' stuff, but not much of the 'art' part of the equation. Anyone can punch or kick with no training required... But not anyone can make it look seemless and effortless. The internal arts to a major degree, but also the external arts emphasis correct stance, flexibility, power, and breathing and balance, and so many other things. It is like its own subculture with plenty of small quirks and traditions like the bow and its own values like discipline, respect and courage... I am afraid MMAs popularity may diminish them or take the spirit away from traditional martial arts.