- Don West: [about John and Maureen exchanging looks] Whatever you two just psychically communicated to each other, I'm in.
- Penny Robinson: [irrationally] Don't talk to me in a tone that makes me feel like I'm irrational or like I don't understand the logic. You are not Mom. And we are not a math problem.
- Penny Robinson: [looking out on their new vista] I feel like Alpha Centauri looked different in the brochure.
- John Robinson: Guess we're gonna have to delay that driving lesson, huh?
- Will Robinson: It's okay, because I, uh, I should probably learn to fly a Jupiter.
- Judy Robinson: [introducing herself to her all-child crew] Everybody take the person beside you's hand. I know they're probably dirty, and what with all the crying there's a fair amount of snot, but what's that compared with all the alien microbes and whatever else we touched down on that planet.
- Judy Robinson: Some of you don't know each other. Some of us are brothers and sisters. Some of us are friends. Some of us are strangers. But from now on, none of us are alone.
- [last lines]
- Young Boy: What is the "Fortuna"?
- Judy Robinson: The Fortuna was a ship that everyone thought was lost almost 20 years ago. It was commanded by Grant Kelly .. my father.
- Judy Robinson: [noticing the wall plaque commemorating the Fortuna] You know, it's been almost a year since we went missing. I wonder if there's a wall with our name on it on Alpha Centauri.
- John Robinson: What do you say we give them one hell of a surprise?
- John Robinson: Judy, listen to me. I know a lot of good men and women who I've trusted with my life. But the lives of my children? That's that's a different story. There's only two people that I trust your mother, and you.
- Judy Robinson: Me?