DOCTOR: My outward appearance is of no importance whatsoever.
PERI: Well, it is to me. I have to live with it.
PERI: Here, look at yourself.
DOCTOR: Very well, if you insist.
PERI: What do you see?
DOCTOR: Ah. A noble brow. Clear gaze. At least it will be, given a few hours sleep. A firm mouth. A face beaming with a vast intelligence. My dear child, what on Earth are you complaining about?