- Dr. Zachary Smith: My dear sir, at the risk of appearing curious, may I ask what you were blasting FOR?
- Nerim: Cosmonium.
- Dr. Zachary Smith: Cosmonium? Cos... I don't believe I've ever heard of it. I don't suppose it's very... precious?
- Nerim: Well, it is, if you know HOW to get it and what to do with it.
- Will Robinson: [appraising Nerim's cosmonium] It looks like you've got little bits of sun there, Mr. Nerim.
- Dr. Zachary Smith: Don't be ridiculous, Will. What possible use could there be for "little bits of sun?"
- Nerim: Well, the boy's smarter than YOU are, Zack boy. "Bits of sun" is just about what this is - quintescence of the living force that thaws the ice and melts the snow and puts living breath in everything that grows. That's a sight more precious than diamonds, ain't it, Zach boy?
- Prof. John Robinson: Begin report on seismic disturbance.
- The Robot: Mio-seismic area of shock: increasing. Region of seismic focus: now distributed over entire planet. Subterranean displacement of geologic structure: total and continuous. Core of planet in condition of molten ferment.
- Prof. John Robinson: Worse than I thought.
- Maureen Robinson: How bad?
- Prof. John Robinson: I'm afraid we're on a merry-go-round of chain reaction. In a matter of hours this planet will cease to exist. It'll disintegrate into cosmic dust.
- Nerim: This here planet has got layers and layers of rock so solid you could lay a burnin' sun right on it and the sun'd just burn itself out and leave the planet untouched.
- Will Robinson: [to John] And don't worry about Dr. Smith. I'll take care of HIM.
- Dr. Zachary Smith: [witheringly] What a comfort you are in my hour of need.
- Prof. John Robinson: Oh, yes, there's something I forgot to tell you: You've been the most uncomplaining, patient partner a man could wish for while we've been here. Thank you, darling.
- Dr. Zachary Smith: You, uh... you will bear me out, won't you, Will, when I tell them that I meant no harm? It was just, uh... It was just a vagrant impulse.
- Will Robinson: [irritated] You have to explain that yourself. I don't know what a vagrant impulse means.