"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 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."