The Doctor and Rory in “The Vampires of Venice”

It's a lot to take in, isn't it? Tiny box, huge room inside; what's that about? Let me explain...

It's another dimension.

It's basically another dimen-- [realizes] ...what?

After what happened with Prisoner Zero, I've been reading up on all the latest scientific theories. FTL travel, parallel universes...

I like the bit when someone says "It's bigger on the inside!" I always look forward to that. [The Doctor looks annoyed, then grins]