It's just an idle thought, but it may be fun just to dwell on it a little bit more.

Most of the the attributes in FFXIV are fairly self-explanatory. STR represents physical power, DEX represents agility, INT stands for intellectual prowess, and so on. PIE, I suppose measures the degree to which your character is attuned to either the divine or the Lifestream. Hence, the higher it is, the higher the level of aether/MP you possess.

What then does MND represent? Is it meant to be the equivalent of D&D's Wisdom stat, itself a poorly defined attribute? Given that MND is the primary attribute of healers, my guess would be that it represents your character's "emotional quotient" or, to put it another way, it measures your character's empathy. Hence, the stronger your degree of empathy, the better your ability to sense and heal wounds.

What do you think?