Board Thread:General Discussion/@comment-124.176.177.92-20130831102324/@comment-7153552-20130912143925

The Greybeards have that ability, but I'm sure that it takes a bit of doing for them. Also, they mention they did it as a test to see if you truly were the Dragonborn. Beyond that, we're talking about an ancient order of monks, so they expect you to undergo the trials to learn these words yourself. Good questiong, luckily this one happens to have a decent enough lore-related answer, lol.