Ray wrote:

What would the language of angels be like, or the language of
jinns or the Paracelsian spirits: sylphs, salamanders, undines
& gnomes?>>

This reminds me of a couple things:

1.) According to Milton, had man (i.e., Adam and Eve) *not* eaten of the tree of knowledge, they eventually would have not only gained all knowledge, they would have become angels.  In that sense, they'd be a kind of pre-evolutionary step to angels, and so human language might, in a sense, be a proto form of angel language.  So, maybe evolve a language till you can barely see straight...?

2.) A subset of my friends continued, after elementary school, to be interested in role playing games (the non-video game variety), to the extent that they subscribed to some sort of monthly/quarterly magazine (I have the distinct feeling that it was sponsored either by AD&D or Wizards of the Coast--probably the latter).  In each of these issues they had sections devoted to "language"--two pages, each.  An example of one was a language spoken by dwarves.  According to them, the language had two types of sounds--those dwarves could easily produce, and those they couldn't.  The ones they could easily produce could be written by "striking a stone with an axe in a straight line".  So these would be (we're looking at orthography here):

v, x, w, i, l, t, z, y

And the difficult ones:

c, a, o, u, e, s, h, g

Basically all the ones with curves which would be "difficult to produce by striking an axe against a rock".

Needless to say, all the letters stood for their English equivalent.

Now, it's easy enough to say, "This is ridiculous!  It's nothing remotely even resembling a language!"  The more interesting question, in my mind, is: If they feel it worth their while enough to devote a section to made-up "language" in every issue they put out, how is it that we're not getting paid to create languages?