I always think it's a mistake when you actually have to set books aside and actually sit down and research something. I always think they've got to come from within.

It's been a very interesting exercise as a writer - writing a little family group, like The Incredibles or The Simpsons or something like that, and setting it in a big Star Wars-type setting. It's been really fun, definitely different from the kind of thing I normally do.

The big thing is it's a domestic drama. Everything else in science fiction tends to be high-concept. Really for the last 40 years or so I think sci-fi's been a little cold and a little inhuman quite often - certainly since the 1980s - and I really wanted to do something that almost felt like a regular, real-life drama but just set it in a sci-fi setting. I think the best stuff is always like that.

The books are all very, very different so the publishers really had to be different too.

If you feel the need to make everyone happy, you should be a wedding planner not a leader.

When you don't have time to do your job, that's a good indication you're playing the wrong game.

Matthew Vaughn phoned me up and he said, "Hey, listen, the movie has just done gangbusters. We've got to do the second one." And I was like, "Matthew, I have no second book. Dave and I haven't done it," and he's like, "You're kidding!" He said, "This movie's just made $420 million!" I was like, "...We've got nothing." So the amazing thing was, because we own the rights, we still get paid and everything, which is fantastic.