Yes, I must go on. Farewell, Sam!
'Go on! Go on! No time to lose. I'll deal with him. Go on!'
Frodo looked at him as if at one now far away. 'Yes, I must go on,' he said, 'Farewell, Sam! This is the end at last. On Mount Doom doom shall fall. Farewell!' He turned and went on, walking slowly but erect, up the climbing path.
(The Return of the King:Mount Doom)