A scene from “Unfinished Business”

Prince Philip: We can be a rough bunch in this family. And I'm sure, on occasion, to a sensitive creature like you, it must feel like ... Well, let me ask. What does it feel like?

Princess Diana: A cold, frozen tundra.

Prince Philip: Right. Like that, then.

Princess Diana: An icy, dark, loveless cave with no light. No hope. Anywhere. Not even the faintest crack.

Prince Philip: I see. He will come around. Eventually. When he realises he can never have the other one. Would it help you to realise we all think he's quite mad?

Princess Diana: That might have reassured me once. But I worry we're past that point now, Sir. And if he, if this family, can't give me the love and security that I feel I deserve, then I believe I have no option but to break away, officially, and find it myself.

Prince Philip: I wouldn't do that if I were you.

Princess Diana: Why not?

Prince Philip: Let's just say I can't see it ending well for you.

Princess Diana: I hope that isn't a threat, sir.

[The door to Diana's bedroom opens and an Equerry steps inside]

Prince Philip: [to the Equerry] No, not now! Out.

Princess Diana: Although we are both outsiders who married in, you and I are quite different.

Prince Philip: Yes. I can see that now. You're right to call me an outsider. I was an outsider the day that I met the ... the 13-year-old princess who would one day become my wife. And after all these years, I still am. We all are. Everyone in this system is a lost, lonely, irrelevant outsider apart from the one person, the only person, that matters. She is the oxygen we all breathe. The essence of all our duty. Your problem, if I may say, is you seem to be confused about who that person is.