"You don't understand. No one who didn't live through those terrible years can understand. Towards the end of the twentieth century, a series of wars broke out. There were hundreds of years of nothing but destruction and killing. Nearly seven eighths of the world's population wiped out. The rest living in holes in the ground, starving, reduced to the level of animals.. there was no power on Earth to stop.. [the Daleks]"
- The Controller, Day of the Daleks, Episode Four (January 22nd 1972)
Written by Louis Marks