There is a distinct possibility that a Flamel fic was written for the gen ficathon hosted by saeva a few months ago. I seem to remember that Flamel was among the challenges.

And I prefer to imagine that, if he did protest the destruction of the stone, it would have been less out of greed for immortality (I think after six hundred years he must have been getting rather tired,)

Ah, see, this is something I am rather sceptic about. Of course, since we know nothing about Flamel, it's all subject to conjectures, but my impression about the whole immortality issue (as traditionally presented) is that it makes you sort of addicted. Even though you know that it's not good for you, you still carry on. This has nothing to do with Rowling's canon, however, and is merely my disilussion with regard to immortality.