You people are forgetting someone who happened to be a pupil of Aule... a little someone with a knack for these things... that's right... the evil one... the great Sauron himself! He's been everywhere, seen everything, and ruled everyone (except Bombadil!). He's a Maiar so he can percieve what most anything is saying. He can decipher hidden languages (look what he did to Felagund). And as the base-master of all treachery, he probably had invented a few of his own (besides the Black Speech) for his own devious purposes. If not him, I'd have to go for Bombadil, since he is Master. He was the first, so he watched all these puny little languages be born. He probably knows the speech of rocks!
|