Related:

• Improve a mechanical device and you may double productivity.
  But improve man, you gain a thousandfold. -- Khan Noonian Singh, "Space Seed," stardate 3142....
• You are an excellent tactician, Captain. You let your second in command attack while you sit and watch for weakness.
  -- Khan Noonian Singh, "Space Seed", stardate 3141.9...
• Insufficient facts always invite danger. -- Spock, "Space Seed," stardate 3141.9.
• Superior ability breeds superior ambition. -- Spock, "Space Seed," stardate 3141.9.
• As a matter of cosmic history, it has always been easier to destroy than to create.
  -- Spock, "The Wrath of Khan," stardate 8130.3....
• If I can have honesty, it's easier to overlook mistakes. -- Kirk, "Space Seed," stardate 3141.9.
• We humans have a streak of barbarism in us -- appalling, but there nevertheless.
  -- Kirk, "Space Seed," stardate 3141.9....
• Kirk: "Khan! Khan!" -- "STII:TWOK", Stardate 8130.4
• Khan: "Ah Kirk, my old friend. Do you know the Klingon proverb that tells us, 'Revenge is a dish that is best served cold'?
  It is very cold...in space." -- "STII:TWOK", Stardate 8130.4...