- Louise Maddison: [about the mutant] Man created him and God destroyed him, He brought the rain and the clean air.
- Jim Maddison: Sometimes I have a feeling of doom.
- Rick: All I know is there are two forms of life fighting for survival here in this valley, and only one of them can win. It's got to be us!
- Prologiue: [Prologue] What you are about to see may never happen... but to this anxious age in which we live, it presents a fearsome warning... Our story begins with... THE END!
- Rick: [Looking at the still moist bones of a rabbit] Do you think he ate that?
- Jim Maddison: Forty-nine roentens. Do you think a man could eat that poisonous meat and live?