Steven Moffat

"The Doctor: Amazing. Nancy: What is? The Doctor: 1941. Right now, not very far from here, the German war machine is rolling up the map of Europe. Country after country, falling like dominoes. Nothing can stop it, nothing. Until one tiny, damp little island says "No. No, not here." A mouse in front of a lion. You're amazing, the lot of you. I don't know what you do to Hitler, but you frighten the hell out of me."

"Come on, Rory! It isn't rocket science, it's just quantum physics!-The Doctor (Matt Smith)"

"The Doctor: I've seen bigger. Clara: Really?The Doctor: Are you joking? It's massive!"

"Hitler: Thank you, whoever you are. I think you just saved my life. The Doctor: Believe me... It was an accident."

"You have to take your own bold approach, and if you do you will be rewarded with success. Or calamitous failure. That can happen too."

"Good is good in the final hour, in the deepest pit – without hope, without witness, without reward. Virtue is only virtue in extremis."

"This was supposed to be yesterday. I was sitting on the Cardiff/London train, supposedly about to write this very column, and realising something quite terrible. My head was entirely empty. A vast echoing void. Bigger on the inside, but with nothing in it. You could drop a pebble in my brain and wait for an hour to hear it land. No actually, you couldn't - that would be aggressive and unhelpful, so keep your damn pebbles to yourself."

"People assume that time is a strict progression of cause to effect, but *actually* from a non-linear, non-subjective viewpoint - it's more like a big ball of wibbly wobbly... time-y wimey... stuff."

"The universe is big. It's vast and complicated and ridiculous. And sometimes—very rarely—impossible things just happen and we call them miracles."

"The universe is big, its vast and complicated, and ridiculous. And sometimes, very rarely, impossible things just happen and we call them miracles. And that's the theory. Nine hundred years, never seen one yet, but this would do me."

"When you run with the Doctor, it feels like it'll never end. But however hard you try you can't run forever. Everybody knows that everybody dies and nobody knows it like the Doctor. But I do think that all the skies of all the worlds might just turn dark if he ever for one moment, accepts it. Everybody knows that everybody dies. But not every day. Not today. Some days are special. Some days are so, so blessed. Some days, nobody dies at all. (In the library, the Doctor walks back to the TARDIS. He stops, looking at the doors. Then he raises his hand, and stands there poised like that for a long moment. Finally he snaps his fingers. The doors open. He smiles slowly and walks in, joining Donna. Then he snaps his fingers again, and the doors close. River's voice continues over this.) Now and then, every once in a very long while, every day in a million days, when the wind stands fair, and the Doctor comes to call... everybody lives."