The Doctor: The Fourth Great and Bountiful Human Empire. And there it is: planet Earth at its height. Covered with megacities, five moons, population 96 billion. The hub of a galactic domain, stretching across a million planets, a million species. With mankind right in the middle. [Adam faints] The Doctor: [leans towards Rose, still looking out over the Earth] He's your boyfriend.

...The very word 'fiction' implies another world, literally a different place, whereas no one claims that a dedicated sportsman is escaping his life, or a chef or a nurse. But the poor writer - the sci-fi one especially - is seen as running away. Bollocks. This is real, for me, and it's tough, it's fun, it's practical, and it's very, very important.

It's tough and it should be tough - it should never be easy to be given millions of pounds to make a drama. The coalition government is doing terrible things to the BBC, but drama will survive even if we end up putting on a play in a backroom of a pub.

Fun, that's the word I keep on using. That's the word I worry about when other writer's scripts get too dark. Optimistic. Fun. And to be optimistic and have fun there's got to be a darkness there. I think that's a very British attitude.

Buffy the Vampire Slayer showed the whole world, and an entire sprawling industry, that writing monsters and demons and end-of-the-world is not hack-work, it can challenge the best. Joss Whedon raised the bar for every writer - not just genre or niche writers, but every single one of us.

The Doctor: Rose... before I go, I just want to tell you: you were fantastic. Absolutely fantastic. And do you know what? [Pause] So was I!

Rose:i love you Doctor:Quite right, and i guess if it's my last chance to say it... Rose Tyler... (the doctor fades, him in his TARDIS, with tear tracks and a tear running down his cheek)