There's something that doesn't make sense. Let's go and poke it with a stick.

Bow ties are cool.

Reinette: One may tolerate a world of demons for the sake of an angel.

Amy Pond: 'I thought... well, I started to think you were just a madman with a box.'The Doctor: 'Amy Pond, there's something you better understand about me, 'cause it's important and one day your life may depend on it. [He Smiles] I am definitely a madman with a box.

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.

The Doctor: This is bad, I don't like this. [kicks console and yells in pain] Never use force, you just embarrass yourself. Unless you're cross, in which case... always use force! Amy: Shall I run and get the manual? The Doctor: I threw it in a supernova. Amy: You threw the manual in a supernova? Why? The Doctor: Because I disagreed with it! Now stop talking to me when I'm cross!

Geronimo!

The Doctor: [aiming gun at the ceiling] Didn't anyone ever tell you? There's one thing you never put in a trap if you're smart. If you value your continued existence, if you have any plans about seeing tomorrow, there's one thing you never, ever put in a trap. Angel Bob: And what would that be, sir? The Doctor: Me. [fires]

You don't want to take over the universe. You wouldn't know what to do with it beyond shout at it.