Related:

• Without freedom of choice there is no creativity. -- Kirk, "The return of the Archons", stardate 3157.
  4...
• Landru! Guide us! -- A Beta 3 person, "The Return of the Archons," stardate 3157.4
• We once were as you are. Spears and arrows. There came a time when our weapons grew faster than our wisdom, and we almost destroyed ourselves.
  We learned from this to make a rule during all our travels never to cause the same to happen to other worlds ....
• Kirk: "Well, are you a doctor or aren't you?" -- "Amok time", Stardate 3372.7.
• Kirk: "Isn't it about time you became something else?
  "Kirk": "I like it here." -- "STVI:TUC", Stardate 9523.8...
• Kirk: "Mister Chekov, I think you've earned your pay for the week.
  -- "Who Mourns For Adonais?", Stardate 3468.1....
• Time is flying never to return. -- Vergil
• Saavik: "Permission to speak candidly, sir." Kirk: "Granted.
  Saavik: "I don't believe this was a fair test of my command abilities....
• Kirk: "So, we're stranded here, in the middle of a Klingon occupation army.
  Spock: "So it would seem. Not a very pleasant prospect....