As we all know, it is the proper duty of every British subject to come to the aid of the TARDIS.

River Song: Right, I have questions. But number one is this: what in the name of sanity have you got on your head? The Doctor: It's a fez. I wear a fez now. Fezzes are cool.

It's a fez. I wear a fez now. Fezes are cool.

Reinette: One may tolerate a world of demons for the sake of an angel.

Come on, Rory! It isn't rocket science, it's just quantum physics! -The Doctor (Matt Smith)

As we all know, it is the proper duty of every British subject to come to the aid of the TARDIS.

Never ignore a coincidence. Unless you're busy, in which case, always ignore a coincidence.