Demons run when a good man goes to war. Night will fall and drown the sun when a good man goes to war. Friendship dies and true love lies. Night will fall and the dark will rise when a good man goes to war. Demons run but count the cost; the battle's won but the child is lost.

An awful lot of storytelling isn't really about making people understand - it's about making people care.

I wouldn't mind removing all the mistakes I have made. That would be exhausting and take forever. Honestly, it's one of the spells of my life that has been the most perfect. Not because I did the job perfectly, because of course I did it very imperfectly, but because I enjoyed it so much. What would I change? I complain a lot. I whinge, I more or less communicate in levels of complaint so I wish sometimes I didn't just spend all my time saying, 'I'm working so hard, what do I get in return for this?'.

I write the kind of stuff I'd like to watch.

Peter Capaldi, will always be Doctor Who. You retain the title forever. Ask your predecessors, they all think they're the real one. I've had Sunday lunch with Peter Davidson and David Tennant and they're eyeing each other like, 'It's me!

If anyone said to me 'invent a new monster so we can sell more toys', I'd kick them out of my office.

Come on, Rory! It isn't rocket science, it's just quantum physics! -The Doctor (Matt Smith)