He doesn't have to outrun the lion, only his friend. Then the lion catches up with his friend and eats him. The strong survive, the weak are killed: the law of the jungle! ... Yes, very clever, if you don't mind losing your friend. But what happens when the next lion turns up? I think you'd better get your running shoes on, gentlemen.
“Survival” · Season 26, Episode 4
In this episode: Seventh Doctor (4), Ace (2)
We'll be safe over there. Safe from the Cheetahs, and the Master.
"Master?" Who's he?
An evil genius. One of my oldest and deadliest of enemies.
Do you know any nice people? Y'know, normal everyday people, not power-crazed nutters trying to take over the galaxy?
If we fight like animals, we die like animals!
Where have they gone?
They've been taken back to the wilderness. The place is different, but the hunt goes on ...you know all about the hunt, don't you Ace?
I felt like I could run forever, like I could smell the wind and feel the grass under my feet, and just run forever.
The planet's gone, but it lives on inside you, and it always will.
[Smiles] Good.
The Doctor [the final lines of the original series]: There are worlds out there where the sky is burning, and the sea's asleep, and the rivers dream; people made of smoke and cities made of song. Somewhere there's danger, somewhere there's injustice, and somewhere else the tea's getting cold. Come on, Ace. We've got work to do.
These quotes come from Wikiquote's Doctor Who pages and are available under the Creative Commons Attribution-ShareAlike License.

