Of Beorn, by Gandalf: The Hobbit, Queer Lodgings Who do you suppose 'they' in 'they will perish' is? Goblins? Wargs? Men? What about 'I shall go back!'. Do you agree with Gandalf's idea that he is from the mountains himself? Tolkien said Letters of J. R. R. Tolkien, #144 So, what do you think? The Letter, basically saying he wouldn't go back to the mountains because he was dead, that was written after The Hobbit? What's written as part of the story as opposed to an idea made in hindsight?