PERI: Did you have to be so rude?

DOCTOR: To whom?

PERI: Hugo. You could at least have said goodbye.

(The time rotor starts moving and the Doctor heads for the inner door, sighing.)

PERI: Are you having another of your fits?

DOCTOR: You may not believe this, but I have fully stabilised.

PERI: Then I suggest you take a crash course in manners.

DOCTOR: You seem to forget, Peri, I'm not only from another culture but another planet. I am, in your terms, an alien. I am therefore bound to different values and customs.

PERI: Your former self was polite enough.

DOCTOR: At such a cost. I was on the verge of becoming neurotic.

PERI: We all have to repress our feelings from time to time. I suggest you get back into the habit.

DOCTOR: And I would suggest, Peri, that you wait a little before criticising my new persona. You may well find it isn't quite as disagreeable as you think.