Oswin

I don't know where I am. I just know I'm running. Sometimes it's like I've lived a thousand lives, in a thousand places. I'm born, I live, I die. And always there's the Doctor. Always I'm running to save the Doctor. Again and again and again. And he hardly ever hears me. But I've always been there. Right from the very beginning. Right from the day he started running. 
Run you clever boy, and remember.