Well, I've always taken the phrase "When the angel woos the clay he'd lose/his wings at the dawn of day" as "dry, self-mocking (humour)"   You know, poets have such a marvellous way of putting things but, if the subject doesn't give a toss about poetic sentiments, the poor wee verses end up writhing on the ground at the feet of said subject.
There is some very good stuff on this thread. I quite like Eric the Streetsinger's thoughts on the song. I've always loved this song, and love to sing it - it first struck me because of a personal situation at the time I first heard Dick Gaughan sing it.
   I'm a bit of a Philistine when it comes to grasping the full meaning of songs. Often, for me, it's a few phrases and the general strength of the song that lodges it in my heart. A bit like how I drink wine or beer, a particular aspect of the "flavour" strikes me and I often overlook the finer nuances (what do you mean "a hint of chocolate"?).
   Anyway, I don't often get by here- post even less- but this is enjoyable. thanks to all.          SteveH