Related:

• We found them totally uninterested in medical aid or hospitals.
  They believe that only the strong should survive. -- McCoy, "Friday's Child," stardate 3497.2....
• Earthmen fear to bargain honestly. -- Kras the Klingon, "Friday's Child," stardate 3497.2.
• Kor: "We Klingons have a reputaton for ruthlessness.
  You will find that it is deserved. Should one Klingon soldier be killed, a thousand Organians will die....
• The sight of death frightens them [Earthers]. -- Kras the Klingon, "Friday's Child," stardate 3497.
  2....
• We believe men should fight their own battles. Only the weak will die.
  -- Proconsul Marcus Claudius, "Bread and Circuses," stardate 4041.2....
• To live is always desirable. -- Eleen the Capellan, "Friday's Child," stardate 3498.9.
• Aelborne: "Captain, since it is too late for you to escape, perhaps we should do something about protecting you.
  -- "Errand Of Mercy", Stardate 3198.4...
• Klingons appreciate strong women. -- Worf, "Angel One", stardate 41636.9
• They're offering you a chance for combat. They consider it more pleasurable than love.
  -- McCoy, "Friday's Child," stardate 3497.2....