Writer Jerry Sohl is credited as Nathan Butler.
Filming locations: Bronson Canyon; Santa Ynez Valley
According to Leonard Nimoy, Charles Bronson
, then Jill Ireland's boyfriend, later her husband, was constantly on location, jealously watching their love scenes being filmed.
Admiral Komack is named after James Komack, later the director of "A Piece of the Action."
Although Bobby Bass (Crewman #2) appeared in six other episodes, this is the only episode where he has any dialogue.
Kirk: Another dream that failed. There's nothing sadder.
Spock: I have never understood the female capacity to avoid a direct answer to any question.
Spock: Emotions are alien to me. I'm a scientist.
Kirk: Where are you?
Spock: I don't believe I want to tell you that.
Kirk: Spock, I don't know what you think you're doing, but this is an order. Report back to me at the settlement in ten minutes. We're evacuating all colonists to Starbase 27.
Spock: No, I don't think so.
Kirk: You - don't - think - so - what??
Spock: I don't think so...Sir.
McCoy: That didn't sound at all like Spock, Jim.
Kirk: No, it... I thought you said you might like him if he mellowed a little.
McCoy: I didn't say that! Not exactly.
Kirk: Where's McCoy?
Spock: He went off to create something called a mint julep. That's a drink, Jim.
Kirk: No wants -- no needs? We weren't meant for that. None of us. Man stagnates if he has no ambition, no desire to be more than he is.
Kirk: All right you mutinous, disloyal, computerized half-breed, we'll see about you deserting my ship.
Spock: The term 'half-breed' is somewhat applicable, but 'computerized' is inaccurate. A machine can be computerized, not a man.
Kirk: What makes you think you're a man? You're an overgrown jack rabbit, an elf with a hyperactive thyroid.
Spock: Jim, I don't understand.
Kirk: Of course you don't understand. You don't have the brains to understand. All you have are printed circuits.
Spock: Captain, if you'll excuse me.
Kirk: What can you expect from a simpering, devil-eared freak, whose father was a computer and whose mother was an encyclopedia?
Spock: My mother was a teacher, my father an ambassador.
Kirk: Your father was a computer, like his son. An ambassador from a planet of traitors. The Vulcan never lived who had an ounce of integrity.
Spock: Captain, please don't...
Kirk: You're a traitor from a race of traitors, disloyal to the core, rotten like the rest of your sub-human race – and you've got the gall to make love to that girl.
Spock: That's enough.
Kirk: Does she know what she's getting, Spock? A carcass full of memory banks who should be squatting on a mushroom instead of passing himself off as a man. You belong in a circus, Spock, not a starship – right next to the dog-faced boy.
Kirk: I'll tell you something - it's not every First Officer that gets to belt his Captain...several times.
Spock: You did that to me deliberately.
Kirk: Spock, believe me it was painful...in more ways than one.
Spock: Striking a fellow officer is a court-martial offense.
Kirk: Well, if we're both in the brig, who'll build the subsonic transmitter?
Spock: That is quite logical, Captain.
Spock: I am what I am, Leila, and if there are self-made purgatories, then we all have to live in them. Mine can be no worse than someone else's.
Leila: You never told me if you had another name, Mr. Spock.
Spock: You couldn't pronounce it.
Sandoval: We don't need you..not as a doctor.
McCoy: Oh no? Would you like to see just how fast I can put you in a hospital?
Sandoval: I am the leader of this colony. I'll assign you to whatever work I think is suitable!
McCoy: Just a minute...better make me a mechanic. Then I can treat little tin gods like you!
McCoy: Well, that's the second time man's been thrown out of paradise.
Kirk: No, no. This time we walked out on our own. Maybe we weren't meant for Paradise. Maybe we were meant to fight our way through. Struggle. Claw our way up, scratch for every inch of the way. Maybe we can't stroll to the music of the lutes. We must march to the sound of drums.
Kirk: We haven't heard much from you about Omicron Ceti 3, Mr. Spock.
Spock: I have little to say about it, Captain, except that for the first time in my life... I was happy.
What Changed in the Remastered Version
Not too much changed in this episode beyond the general improvements cited on the main series page. The planet Omicron Ceti 3 received the expected CGI upgrade.
Doesn't the Federation check on colonists? It seems odd that a colony would be established and never monitored to see whether it was thriving, stagnant, or dead. At least in the beginning this should be true, and yet, the Federation never bothered to investigate Omicron Ceti III until years later. The most likely explanation is that many, many people sought to form colonies at this point in the Federation's history - so many that it may have been impossible to monitor them all, especially if they did not request help.
Berthold Rays must be an odd form of radiation indeed, to affect only animals. While there are many toxins and poisons that affect only certain species, radiation harms cells by ionizing key cellular chemicals, which usually ruins them. Plant cells aren't so different from animal cells that they can withstand this treatment. About the only possible explanation is that the spores were in all the surviving Omicron Ceti III life, and they are what made survival possible there (species incompatible with such life, such as animals and perhaps some plants, died off).