THAWN: Don't you worry about the Swampies. We'll look after them, provided they see reason.

DOCTOR: What, teach them to carry trays?

FENNER: Why not? Tell me, would you let a small band of semi-savages stand in the way of progress?

DOCTOR: Well, progress is a very flexible word. It can mean just about anything you want it to mean.

“You can be a pacifist tomorrow. Today, you have to survive.”