- Prof. Arnold Nordstrom: This is my daughter, Mrs Roberts, who runs this household with an iron rod.
- Janice Roberts: [Later after her son has loosed Tobor] It's Gadge! I bet he's doing it .. he's bad. Very bad!
- Janice Roberts: [Gadge, her son has received an invitation to 'Space Travel Preview of Flight to Mars', for him and a friend] And who's going to be your friend?
- Brian Roberts: Well, I'd like to invite you, Mother; but I doubt you'd understand this sort of thing.