(after Chekov dies)
Spock: Gentlemen, there is one thing which requires the immediate attention of all of us--specifically, our future.
Kirk: But not this minute, Spock. It takes us... a little longer.
Spock: I understand the feeling, Captain.
McCoy: You talk about another man's feelings. What do you feel, Spock?
Spock: My feelings are not subject for discussion, Doctor.
McCoy: Because there are no feelings to discuss!
Scotty: Chekov is dead! I say it now, and I can hardly believe it, but you worked closely with him. That deserves some memorial.
McCoy: Spock will have no truck with grief, Scotty. It's human.
Kirk: Bones... Scotty...
Spock: Captain... it's quite all right. They forget I am half human.