A ledge. A person on the edge. What would you say if you had 60 seconds to talk a stranger out of taking his or her life?

I'd like to think I'd say something epic and hopefully helpful...but I can see myself either a)breaking down and crying or b) getting angry and saying "what the fuck don't be so selfish"
I really don't think those things would be helpful though.
Maybe something like
"Hey, I'm sorry for whatever has happened to you to come to this point. I don't know how you're feeling and thinking, and no one can understand really. But is it worth it to give up? You're here for a reason I promise. It might not seem like it now, but thats life, figuring everything out. Please, stay."