Related:

• The sight of death frightens them [Earthers]. -- Kras the Klingon, "Friday's Child," stardate 3497.
  2....
• We Klingons believe as you do -- the sick should die.
  Only the strong should live. -- Kras, "Friday's Child," stardate 3497.2....
• Their [the Klingon's] empire is made up of conquered worlds.
  They take what they want by arms and force. -- Kirk, "Friday's Child," stardate 3497.2....
• McCoy: "I'm a doctor, not an escalator." -- "Friday's Child", Stardate 3497.2.
• To live is always desirable. -- Eleen the Capellan, "Friday's Child," stardate 3498.9.
• Virtue is a relative term. -- Spock, "Friday's Child," stardate 3499.1.
• The highest of all our laws states your world is yours and will always remain yours.
  -- Kirk, "Friday's Child," stardate 3497.2....
• They're offering you a chance for combat. They consider it more pleasurable than love.
  -- McCoy, "Friday's Child," stardate 3497.2....
• 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....