From the lowest dungeon to the highest peak I fought with the Balrog of Morgoth... Until at last I threw down my enemy and smote his ruin upon the mountain side... Darkness took me, and I strayed out of thought and time... The stars wheeled overhead, and every day was as long as a life age of the earth... But it was not the end. I felt life in me again. I've been sent back until my task is done.
~Gandalf, The Lord of the Rings