Constitution as the Luck Stat

I was reading the AD&D 1e DMG, enjoying my swim in the sea of Gygaxian prose, when I came across the discussion on page 82 about hit points.

It is quite unreasonable to assume that as a character gains levels of ability in his or her class that a corresponding gain in actual ability to sustain physical damage takes place. It is preposterous to state such an assumption, for if we are to assume that a man is killed by a sword thrust which does 4 hit points of damage, we must similarly assume that a hero could, on the average, withstand five such thrusts before being slain! Why then the increase in hit points? Because these reflect both the actual physical ability of the character to withstand damage - as indicated by constitution bonuses- and a commensurate increase in such areas as skill in combat and similar life-or-death situations, the "sixth sense" which warns the individual of some otherwise unforeseen events, sheer luck, and the fantastic provisions of magical protections and/or divine protection. Therefore, constitution affects both actual ability to withstand physical punishment hit points (physique) and the immeasurable areas which involve the sixth sense and luck (fitness).

I find the last sentence striking. While I've long come around to the idea that hit points are highly abstract, representing healthiness, divine favor, fighting spirit, etc. in addition to the physical "pieces of meat," it never occurred to me to apply that same logic to Constitution. For as long as I can recall, I've been associating it with actual physical health, and thinking about it as anything but that creates some dissonance for me.

But the more I consider it, the more I like Constitution as an abstract conglomeration of luck, vitality, and health. Of all the stats, Constitution best represents the character's vitality, vigor, and life force, the interface between the character's intangible soul and base matter. Characters with high Constitutions, somehow, possess more of this animating energy. Perhaps it's because they are physically large - when lots of matter accumulates, more of the animating energy is present. Or perhaps individuals are just able to utilize it more effectively, consciously or unconsciously tapping into a "sixth" sense. A high Constitution represents not only the source of energy to effect change in the physical world, but also the energy to power the soul and fight against the currents of fate.

I like this take on Constitution because it implies that it can be active, as opposed to primarily reactive, defensive stat. In 4e at least, it helps explain why classes might use it as an attack stat. Battleminds might have learned how to psionically harness this energy. Warlocks might be "tithing" a portion of their life force to their patrons (I'm now totally sold on a completely Con-based warlock).