"One day you meet the Doctor. And of course, it’s the best day ever. It’s just the best day of your life. Because...because, he’s brilliant, and he’s funny, and mad, and best of all...really needs you. The trick is – don’t fall in love. I do that trick quite a lot, sometimes twice a day. And once you start running, you start to forget; slowly, after a while, you just stopping asking. Who are you? Where are you from? What set you on your way and where are you going? Oh...and what is your name? You get used to not knowing. I thought I never would. I was wrong. I know who he is. I know how he began and I know where he’s going. I learnt the truth about the Doctor and his greatest secret the day we went to Trenzalore."