Context and completeness come most immediately to mind.
What you quoted wasn't even the complete
It served the context of the Star Trek material, as pointed out earlier:
https://en.wikiquote.org/wiki/Star_Trek_VI:_The_Undiscovered_Country
<exerpted for example, information, and other fair use purposes>
Spock: Good morning. Two months ago, a Federation starship monitored an
explosion on the Klingon moon, Praxis. We believed it was caused by
overmining and insufficient safety precautions. The moon's decimation means
a deadly pollution of their ozone. They will have depleted their supply of
oxygen in approximately 50 Earth-years. Due to their enormous military
budget, the Klingon economy does not have the resources with which to combat
this catastrophe. Last month, at the behest of the Vulcan ambassador, I
opened a dialogue with Gorkon, Chancellor of the Klingon High Council. He
proposes to commence negotiations at once.
Admiral Cartwright: Negotiations for what?
Spock: The dismantling of our space stations and starbases along the Neutral
Zone, an end to almost 70 years of unremitting hostility which the Klingons
can no longer afford.
Chancellor Gorkon: I offer a toast. The undiscovered country--the future.
Everyone: The undiscovered country.
Spock: Hamlet, Act 3, Scene 1.
Gorkon: You have not experienced Shakespeare until you have read him in the
original Klingon.
Chang: taH pagh taHbe' [Klingons laugh] "To be or not to be?" That is the
question which preoccupies our people, Captain Kirk. We need breathing room.
James Kirk: Earth. Hitler, 1938.
Chang: I beg your pardon? [pause]
Gorkon: Well, I see we have a long way to go.
<exerpted for example, information, and other fair use purposes>