Martha and Clark in “Unfinished Business”

Martha

Clark... a heart beats only so many times in a life. Your father used his more than anyone I know.

Clark

I just don't know how I'm supposed to be the man he wanted me to be without him here.

Martha

You're his son. You know what's right and wrong. And whether your father is here with us or not, you're a man he's proud of... a man he could look up to. And something tells me he won't be the only one.