| Quote | 
| | McCoy : | "A cage is a cage, Jim." |  |  | to Kirk; unimpressed with his description of how humane the colony is | 
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| | Adams : | "To all mankind. May we never find space so vast, planets so cold, heart and mind so empty that we cannot fill them with love and warmth." |  |  | His toast | 
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| | Spock : | "Interesting. Your Earth people glorify organized violence for forty centuries, but you imprison those who employ it privately." |  |  | to McCoy | 
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| | Kirk : | "One of the advantages of being a captain, doctor, is being able to ask for advice without necessarily having to take it." |  |  | to Noel | 
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| | Spock : | "Open your mind... we move together, our minds sharing the same thoughts." |  |  | performing a meld on Van Gelder | 
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| | Kirk : | "Can you imagine the mind, emptied by that thing? Without even a tormentor for company?" |  |  | to Spock; about Adams | 
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