Downton Abbey, Series Six (1925)

Mr. Bates:
I don't think Mr. Moseley meant to be unkind about Miss Marigold.

Anna:
I'm sure he didn't.

Mr. Bates:
Only it seemed to put you in a strange mood.

Anna:
Did it?

Mr. Bates:
It's ironic. So many children in need of a home, so many homes in need of a child.

[Anna starts weeping]

Mr. Bates:
My God, what have I said? My darling, what have I said?!

Anna:
It's not your fault. Only...I thought I was pregnant. And then this morning...Well, anyway, now I'm not.

Mr. Bates:
You should have told me.

Anna:
I didn't want to get your hopes up.

Mr. Bates:
You weren't to know that'd happen.

Anna:
But you see I was. Because it's happened before. Twice. I can't do it! I'm not able!

Mr. Bates:
There is no proof of that. But if you're not, you're not. We'll be all right.

Anna:
I've let you down.

Mr. Bates:
There are no words less true than those. You could never let me down.