"Its like the great stories Mr. Frodo, the ones that really mattered. Full of darkness and danger they were, and sometimes you didnt want to know the end... But in the end its only a passing thing this shadow, even darkness must pass. A new day will come, and when the sun shines it'll shine out the clearer...I know now folk in those stories had lots of chances of turning back, only they didn't. They keep going because they were holding on to something.
What are we holding onto, Sam?
That there's some good in the world, Mr Frodo, and its worth fighting for."