Marge -Their father is dead.
Doctor -I m sorry.
Marge -Lilly and Cyrils father, my husband is dead and they don’t know yet because if I tell them now then Christmas will always be what took their father away from them and no one should have to live like that. Of course when the Christmas period is over I shall…. I don’t know why I keep shouting like that…
Doctor -Because every time you see them happy you remember how sad they are going to be. And it breaks your heart. Because what’s the point in them being happy now if they going to being sad later. The answer is of course, because they are going to be sad later.
Doctor Who Xmas special 2011