David Tennant on Doctor Who

“I don’t think it’s an easy show to do for a long time, because I think it requires a certain energy and commitment and enthusiasm. And I didn’t want to get to the stage where I felt I wasn’t giving it all it required.”

“Because it's got that cross-generational appeal, which few other things have. It's not a working-class thing, it's not a middle-class thing. The competition winner from Doctor Who magazine was on set today, a 15-year-old girl. When I was a kid, 15-year-old girls didn't watch Doctor Who.”

“I think that’s one of the strengths of the show that it can do things that are really quite bold emotionally, and that fits with running up and down corridors and shooting monsters. It’s all part of a whole, and I think that’s the triumph of what Russell T. Davies, particularly, has done actually, is to just allow that kind of scope, where a fantasy show can also be properly rooted in moments of reality.”