I am going to let Sam speak for me, as I think he says everything I want to say better than I could. Despite working with history every day, I'm not a cynic. I still love and believe in the old stories Sam speaks of. That which brings out the worst in humanity also brings out the best, and the best is worth fighting for.
And I'm going to copy it, because I think it's worth reading as well as listening to.
Frodo : I can't do this, Sam.
Sam : I know.
It's all wrong
By rights we shouldn't even be here.
But we are.
It's like in the great stories Mr. Frodo.
The ones that really mattered.
Full of darkness and danger they were,
and sometimes you didn't want to know the end.
Because how could the end be happy.
How could the world go back to the way it was when so much bad happened.
But in the end, it's only a passing thing, this shadow.
Even darkness must pass.
A new day will come.
And when the sun shines it will shine out the clearer.
Those were the stories that stayed with you.
That meant something.
Even if you were too small to understand why.
But I think, Mr. Frodo, I do understand.
I know now.
Folk in those stories had lots of chances of turning back only they didn’t.
Because they were holding on to something.
Frodo : What are we holding on to, Sam?
Sam : That there’s some good in this world, Mr. Frodo. And it’s worth fighting for.
"But I think, Mr. Frodo, I do understand. I know now."