DOCTOR: I saw the Fall of Troy! World War Five! I pushed boxes at the Boston Tea Party, and now I'm gonna die in a dungeon... in Cardiff!

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.

DOCTOR: You think it'll last forever, people and cars and concrete, but it won't. One day it's all gone. Even the sky. My planet's gone. It's dead. It burned like the Earth. It's just rocks and dust before its time.

ROSE: What happened?

DOCTOR: There was a war and we lost.

ROSE: A war with who? What about your people?

DOCTOR: I'm a Time Lord. I'm the last of the Time Lords. They're all gone. I'm the only survivor. I'm left travelling on my own 'cos there's no one else.

ROSE: There's me.

ROSE: You think you're so impressive.

DOCTOR: I am so impressive.

ROSE: You wish.

DOCTOR: You lot, you spend all your time thinking about dying, like you're going to get killed by eggs or beef or global warming or asteroids. But you never take time to imagine the impossible, that maybe you survive. This is the year five point five slash apple slash twenty six. Five billion years in your future, and this is the day- hold on - this is the day the Sun expands. Welcome to the end of the world.

ROSE: If you are an alien, how comes you sound like you're from the North?

DOCTOR: Lots of planets have a North.

DOCTOR: I'm the Doctor, by the way. What's your name?

ROSE: Rose.

DOCTOR: Nice to meet you, Rose. Run for your life!

CLIVE: The Doctor is a legend woven throughout history. When disaster comes, he's there. He brings the storm in his wake and he has one constant companion.

ROSE: Who's that?

CLIVE: Death.

DOCTOR: Do you know like we were saying about the Earth revolving? It's like when you were a kid. The first time they tell you the world's turning and you just can't quite believe it because everything looks like it's standing still. I can feel it. The turn of the Earth. The ground beneath our feet is spinning at a thousand miles an hour, and the entire planet is hurtling round the sun at sixty seven thousand miles an hour, and I can feel it. We're falling through space, you and me, clinging to the skin of this tiny little world, and if we let go. That's who I am. Now, forget me, Rose Tyler. Go home.

ROSE: Hold on a minute. You can't just go swanning off.

DOCTOR: Yes I can. Here I am. This is me, swanning off. See you.

ROSE: But that arm was moving. It tried to kill me.

DOCTOR: Ten out of ten for observation.

DOCTOR: Fear makes companions of all of us.

SUSAN: Grandfather, we can make friends with them.

DOCTOR: Oh, don't be ridiculous, child.

BARBARA: Why? You treat everybody and everything as something less important than yourself.