Elisabeth Sladen credited as playing...
Sarah Jane Smith
- [the Doctor is holding the ends of two wires connected to the explosives he has set up in the Dalek incubator room]
- Sarah Jane Smith: Well, what are you waiting for?
- Doctor Who: Just touch these two strands together and the Daleks are finished. Have I that right?
- Sarah Jane Smith: To destroy the Daleks? You can't doubt it.
- Doctor Who: Well, I do. You see, some things could be better with the Daleks. Many future worlds will become allies just because of their fear of the Daleks.
- Sarah Jane Smith: But it isn't like that.
- Doctor Who: But the final responsibility is mine, and mine alone. Listen, if someone who knew the future pointed out a child to you and told you that that child would grow up totally evil, to be a ruthless dictator who would destroy millions of lives, could you then kill that child?
- Sarah Jane Smith: We're talking about the Daleks, the most evil creatures ever invented, you must destroy them! You must complete your mission for the Time Lords!
- Doctor Who: Do I have the right? Simply touch one wire against the other and that's it. The Daleks cease to exist. Hundreds of millions of people, thousands of generations can live without fear, in peace, and never even know the word Dalek.
- Sarah Jane Smith: Then why wait? If it was a disease or some sort of bacteria you were destroying, you wouldn't hesitate.
- Doctor Who: But if I kill, wipe out a whole intelligent lifeform, then I become like them. I'd be no better than the Daleks.
- [last lines]
- Sarah Jane Smith: You don't seem too disappointed. We've failed. Haven't we?
- Doctor Who: Failed? No, not really. You see, I know that although the Daleks will create havoc and destruction for millions of years, I know also that out of their evil must come something good.