Too bad the flying-saucer people probably wont be able to read english and will be lacking a sense of irony.

"...the epitaph for the planet, I remember, which he said should be carved in big letters in a wall of the Grand Canyon for the flying-saucer people to find, was this:

WE COULD HAVE SAVED IT BUT WE WERE TOO DOGGONE CHEAP"

--From Hocus Pocus by Kurt Vonnegut.