Related:

• You're from the planet Earth. There is no persecution on your planet.
  There was persecution on Earth once; I remember reading about it in my history class....
• Change is the essential process of all existence. -- Spock, "Let That Be Your Last Battlefield," stardate 5730.
  2....
• No one knows how he'll act under pressure. -- Sulu, "Let That Be Your Last Battlefield," stardate 5730.
  2....
• Spock: "Yet you are pumping him full of your noxious potions, as if he were a human.
  -- "Let That Be Your Last Battlefield", Stardate 5730.6....
• The actual theory is that all life forms evolved from the lower levels to the more advanced stages.
  -- Spock, "Let That Be Your Last Battlefield," stardate 5730.2....
• Chekov: "I do not understand. If there was a ship underneath us, surely the assassins beamed aboard from that wessel, not Enterprise.
  Spock: "You're forgetting something, Mister Chekov....
• Chekov: "Now we go to Starfleet!" Spock: "Now we expand our search to include uniforms.
  Chekov: "All uniforms?" -- "STVI:TUC", Stardate 9523.8...
• Chekov: "And if we cannot peice together what happened?
  What then, sir?" Spock: "In that case, Mister Chekov, it resides in the purview of the diplomats....
• Chekov: "Khan!" Khan: [To Terrell] "I don't know you.
  [To Chekov] "But you, I never forget a face, Mister Chekov, isn't it?...