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!

As we all know, it is the proper duty of every British subject to come to the aid of the TARDIS.

The Doctor...is embarrassingly human for an alien.

I always tend to favor the newer idea.

Madame Kovarian: The anger of a good man is not a problem. Good men have too many rules. The Doctor: Good men don't need rules. Today is not the day to find out why I have so many.

You don’t just give up. You don’t just let things happen. You make a stand! You say no! You have the guts to do what’s right, even when everyone else just runs away.

Rose: Look at you, beaming away like you're Father Christmas! The Doctor: Who says I'm not, red-bicycle-when-you-were-twelve? Rose: [shocked] What? The Doctor: And everybody lives, Rose! Everybody lives! I need more days like this! Go on, ask me anything; I'm on fire!