Madeleine

“Demons run when a good man goes to war
Night will fall and drown the sun
When a good man goes to war

Friendship dies and true love lies
Night will fall and the dark will rise
When a good man goes to war

Demons run, but count the cost
The battle's won, but the child is lost”
― Steven Moffat

“Reinette: One may tolerate a world of demons for the sake of an angel.”
― Steven Moffat

“The Doctor: Don't blink. Don't even blink. Blink and you're dead. Don't turn your back. Don't look away. And don't blink.”
― Steven Moffat

“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.”
― Steven Moffat