“As we learn about each other, so we learn about ourselves.”

“Ah, thank goodness in this regeneration I've regained my impeccable sense of haute couture.”

“Evil? Your evil is my good. I am Sutekh the Destroyer. Where I tread, I leave nothing but dust and darkness... I find that good!”

“But you can't rewrite history! Not one line!”

DOCTOR: I’ve always wondered. Why isn’t “phonetic” spelt with an “F”?

ROSE: I can teach you how to spell “Doctor” with an “F”.

DOCTOR: Yes, it all started out as a mild curiosity in a junkyard, and now it's turned out to be quite a, quite a great spirit of adventure, don't you think?

IAN: Yes. We've had some pretty rough times and even that doesn't stop us. It's a wonderful thing, this ship of yours, Doctor. Taken us back to prehistoric times, the Daleks.

SUSAN: Marco Polo, Marinus.

BARBARA: And the Aztecs.

DOCTOR: Yes, and that extraordinary quarrel I had with that English king, Henry the Eighth. You know, he threw a parson's nose at me.

BARBARA: What did you do?

DOCTOR: Threw it back, of course. Take them to the Tower, he said. That's why I did it.

BARBARA: Why?

SUSAN: The TARDIS was inside the Tower.

RAMO: Why should I trust you?

DOCTOR: That's a very good question. I wish I could think of a good answer.

DOCTOR: Well done you did it.

EMILY BARNFATHER: It also means at some point we will have to come back this way.

DOCTOR: We'll cross that plank when we come to it.

EMILY BARNFATHER: Who are you Doctor?

DOCTOR: I am me.

“We've gone on holiday by mistake!”

BERNICE: You know about me and the...oh goddess, you know him?

IRIS: Know him? I've had him! He's my fancy man.