The Doctor: I've seen bigger. Clara: Really? The Doctor: Are you joking? It's massive!
I always tend to favor the newer idea.
Think you've seen it all? Think again. Outside those doors, we might see anything. We could find new worlds, terrifying monsters, impossible things. And if you come with me... nothing will ever be the same again!
Demons run when a good man goes to war.
There's something that doesn't make sense. Let's go and poke it with a stick.
Nothing can ever be a rule in drama, because then you're saying certain things won't ever happen, and that would be very boring.