Doctor: Don't challenge me, Harriet Jones. Im a completely new man. I could bring down your Government with just a single word.

Harriet Jones: You're the most remarkable man I have ever met. But, I don't think even you are capable of that.

Doctor: No, your right. Not a single word. ... just six.

Harriet Jones: I dont think so.

Doctor: Six words.

Harriet Jones: Stop it!

Doctor: Six... (Walks over to Alex and whispers into his ear) Don't you think she looks tired?