He's Wonderful

Tim Latimer: I've seen him. He's like fire and ice and rage. He's like the night, and the storm in the heart of the sun. He's ancient and forever... He burns at the center of time and he can see the turn of the universe... And... he's wonderful.

Series 3, Episode 9: The Family of Blood

A Legend Woven Throughout History

Clive Finch: The Doctor is a legend woven throughout history. When disaster comes he's there. He brings a storm in his wake and he has only one constant companion.
Rose Tyler: Who's that?
Clive Finch: Death.

Series 1, Episode 1: Rose

I Can Feel It

The Doctor: It's like when you're a kid, the first time they tell you that the world is turning and you just can't quite believe it 'cause 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. The entire planet is hurtling around 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.

Series 1, Episode 1: Rose