- Dr. Zachary Smith: You were going to leave me behind. You are going to leave me, aren't you?
- Maj. Don West: Well, that decision is up to Prof. Robinson, but if he asks for my opinion, I'm voting to leave you here.
- Maj. Don West: [seeing Smith spying on them] Judy, uh, I didn't want to scare Will but actually our fuel-to-weight ratio's going to be very critical.
- Judy Robinson: What does that mean?
- Maj. Don West: Well, it means that, uh, Smith will probably have to be left behind.
- Dr. Zachary Smith: [to himself, observing from behind a rock] We shall see.
- Judy Robinson: I thought Daddy said he was taking Dr. Smith.
- Maj. Don West: [in an undertone] Shhhhh. I'm just teasing. Smith's up there behind the rock, listening.
- Judy Robinson: I think that's nasty of you.
- Maj. Don West: He deserved it.
- Penny Robinson: Well, if you do stay, could you tend to my garden for me?
- Dr. Zachary Smith: Your garden will wither and die, I can promise you THAT!
- Maureen Robinson: Will, Dr. Smith asked you to do something.
- Will Robinson: He's ALWAYS asking me to do something.
- Will Robinson: [having just rescued John and Don from quicksand] I'd have been here even quicker if Dr. Smith had told me you were in trouble.
- Maj. Don West: Now he's in trouble.
- Maj. Don West: You know, it's really a shame, Dr. Smith, but, uh, things don't look too good for you at all.
- Dr. Zachary Smith: The condition you find most cheering.
- Maj. Don West: [enjoying this greatly] Not at all. As a matter of fact, when I compute the fuel-to-weight ratio, which we already know is going to be very critical, I'll do my best to include us all.
- Dr. Zachary Smith: [bitterly] I'm deeply touched.
- Penny Robinson: Does that mean I can take the bloop?
- Dr. Zachary Smith: How can you even think of taking that beast when I may have to remain?
- Will Robinson: I think THE BLOOP should go!
- Penny Robinson: So do I!
- Maj. Don West: Well, we don't have a capsule for the bloop so, uh, that's out of the question.
- Will Robinson: I'll BUILD her a capsule!
- Maj. Don West: [heartily shaking hands with Will] That's a deal! You build a capsule for the bloop and she goes!
- Maj. Don West: [sadly to Smith] Of course, that cuts the available weight still further. Oh, I'm sorry, Dr. Smith, but things don't look very good for you at all.
- Dr. Zachary Smith: Bloop, indeed!
- Dr. Zachary Smith: Now then, as I see it there are two alternatives and the choice is yours: No. 1 - we leave for Earth as planned, with me taking Judy's place on the ship.
- Maureen Robinson: Well, now, you know we can't do that.
- Dr. Zachary Smith: I thought not. Uh, so you choose the other alternative.
- Prof. John Robinson: Exactly what is the other alternative?
- Dr. Zachary Smith: Major West pilots me back to Earth, and your charming little family can stay here bathed in togetherness. When I am safely away, I will radio where Judy is.
- Duplicate Judy: I'm sure you are aware, as Dr. Smith is, that we, the plants, are capable of reproducing an image of... anything. I am simply such an image.
- [Don sees to it that Smith is banished from camp, with the suggestion that they might leave him behind once there's enough fuel for takeoff]
- Dr. Zachary Smith: You'll regret this, Major, I promise you. Remember I warned you. If you don't take me with you, no one will go.
- Will Robinson: My father doesn't lie.
- Dr. Zachary Smith: Well, sometimes it's easier not to speak the whole truth.
- Dr. Zachary Smith: When I decided to set up my camp in this lovely little garden, I started upacking. I placed my shaving kit on this rock, thusly. I turned back to continue with my unpacking when suddenly I heard...
- [a strange echoey sound is heard]
- Dr. Zachary Smith: ...THAT. I turned back. I saw the plant moving toward my shaving kit, just as it is now. Thinking the infernal thing was going to engulf my kit, I tried to grab it. For a moment I was nonplussed, torn between fear of this vegetacious monster and the prospect of the loss of my shaving kit; but, fearlessly I made my decision. I grabbed the thief, forced it open, and plucked my shaving kit from its greedy mouth. I chanced to glance back inside the pod, and do you know what I saw? The plant had created an exact duplicate of my shaving kit. It was, my dear, boy, a truly marvelous discovery.
- Prof. John Robinson: He tricked you, Will. He gave you this fake and kept the real deutronium.
- Will Robinson: But why?
- Maj. Don West: Because he knows we can't go back to Earth unless we have enough deutronium, and he's trying to blackmail us into taking him, but what he doesn't know, Will, is that while you were gone we found our last little pocket in that vein and already have enough deutronium without his canister.
- Dr. Zachary Smith: I've come prepared to strike a bargain.
- Prof. John Robinson: A bargain? Well, that's very decent of you but, uh, why should I bargain with you, and over what?
- Dr. Zachary Smith: Over deutronium, those precious little grains of fuel that will take us away from this beleaguered planet.
- Prof. John Robinson: Well, we don't need your deutronium.
- Dr. Zachary Smith: I'm aware of that, but surely an extra can will guarantee a safe departure.
- Prof. John Robinson: Yes, I suppose it might.
- Dr. Zachary Smith: Good. Now we come to the bargaining part.
- Prof. John Robinson: Which is...
- Dr. Zachary Smith: Will the extra can of deutronium also guarantee that I will be included in the ship's company when you depart?
- Prof. John Robinson: Ah, I thought it would be that. The answer, Dr. Smith, is that we'll take you along if it's humanly possible. Now, considering your recent behavior, I'd say that's... more than fair.
- Will Robinson: Too bad you couldn't find the deutronium, Dr. Smith, but you shouldn't have tried to trick me.
- Dr. Zachary Smith: I didn't just try, I succeeded. Let's not forget that!
- Dr. Zachary Smith: But where are the rest of our happy little group? Don't tell me we have some stay-a-beds in our midst.
- Dr. Zachary Smith: All right, gentlemen, there's no room for goldbricking in this operation. Let's get on with it, shall we?