Primeval, Series 1

Nick:
Why do you want me now, after so long?

Helen:
I'm human. I want company. I want to share this... incredible gift, but only with you. Nick, I have seen such wonders. Things you wouldn't believe...

Nick:
You're asking me to abandon my life. Leave behind everything I know. People are dying back home, and you want me to just run away with you?

Helen:
Animals die, Nick. Species die. [Nick scoffs] You know I'm right. One day humanity will disappear just like the dinosaurs, and nature doesn't care; something else will take our place. Nick, just leave all the other stuff behind. Come with me.

. . .

Helen:
I offer you the key to time. The key to time, Nick. And you turn your back on it. Call yourself a scientist?

Nick:
Call myself a human being.