Madness is just what a genius looks like to a tiny mind.

I like naked women! I'm a bloke! I'm supposed to like them! We're born like that. We like naked women as soon as we're pulled out of one... When Man invented fire, he didn't say "Hey, let's cook!" He said: "Great! Now we can see naked bottoms in the dark!"... The story of male achievement through the ages, feeble though it may have been, has been the story of our struggle to get a better look at your bottoms.

Between the marriages, I shagged my way round television studios like a mechanical digger.

The Doctor: 'You know when grown-ups tell you everything's going to be fine, but you really think they're lying to make you feel better?' Amelia: 'Yeah...' The Doctor: 'Everything's going to be fine.

Time travel is always more magical somehow when you go into the past. Traveling into the future is something you do, every day. You're just not going to get very far. So, I rather like the past travel.

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

What's the point of being a grown-up if you don't get to be immature?