People seem to have read Brimby's line VERY differently than I did. "And in the end, I foresee, one alone shall prove your utter ruin!" He's talking about the ONE RING. It's not just one person who destroys Sauron. It's not Frodo. It's not Gollum. It's the very act of Sauron creating the One Ring that leads to his destruction. He makes the choice to consolidate his power into the Ring... so the Ring itself becomes his undoing. Am I the only one hearing that??? "Mine is just a slower suicide."