DOCTOR: Who I am is where I stand. Where I stand is where I fall.

DOCTOR: You've got the rest of your life. The faster you think, the slower it will pass. Concentrate. Assume you're going to survive. Always assume that. Imagine you've already survived. There's a storm room in your mind. Lock the door and think. This is my storm room. I always imagine that I'm back in my TARDIS, showing off, telling you how I escaped, making you laugh. That's what I'm doing right now. I am falling, Clara. I'm dying. And I am going to explain to you how I survived. I can't wait to hear what I say. I'm nothing without an audience.

ROSE: But, it's like, think about it, though. Christmas. 1860. Happens once, just once and it's gone, it's finished, it'll never happen again. Except for you. You can go back and see days that are dead and gone a hundred thousand sunsets ago. No wonder you never stay still.