Battlestar Galactica, Season 2

[After a bout of negotiations with Sesha Abinell, leader of the Cloud 9 terrorists, Adama briefly confers with Tigh.]

Adama:
Saul, we can't give her Sharon. I hope you know that, right?

Tigh:
I know that. Against our dealing with the terrorists... if we start now, it'll open the floodgates; and it will never stop. And by the way, it's not Sharon. It's a frakking Cylon.

Adama:
You don't think I know that?

Tigh:
I think there's part of you that looks into that thing's eyes and still sees that young girl that reported aboard two years ago as a rook pilot. Well, it's not. It never was. Bill, it's a machine.