DOCTOR: You see, women... they're not exactly my area. Apart from Tegan, and Nyssa. But they were friends, I was responsible for them -- that wasn't the same.

TURLOUGH: Good friends.

DOCTOR: Then there was Sarah-Jane, of course, and Jo. And Romana, both of her. Zoe and Victoria, Dodo and Vicki, and.. Barbara.

TURLOUGH: And Susan?

DOCTOR: Ah, well of course, she was my granddaughter. Sometimes I feel very old.