Bradley
I am biting! There was another thread recently on "spiritual vs. religious": I was trying to find it and couldn't (even with the google search). There I said I was somewhat reluctant to use the term "spiritual" (although I can admit I am a kind of "religious-minded atheist," which is probably even more confusing to most people). Perhaps you help me understand why I am reluctant. Because the word "spirit", as the word "God," is still taken in a realistic sense by many (as if there was a real "spiritual realm" somewhere), it is not (yet) free for metaphorical use.
Still from this point of view "spirit" would be a wonderful concept, since in our Western tradition (which owes so much to Paul) it is contrasted not only with "flesh" but also with "letter". And as such it could be a very good word for the "realm" of metaphor, symbol, or poetry... everything which we do invent or create over against the facts, which does not really exist but is so important to us.
Some words are just not dead enough to be resurrected...