Related:

• Extreme feminine beauty is always disturbing. -- Spock, "The Cloud Minders," stardate 5818.4.
• Violence in reality is quite different from theory.
  -- Spock, "The Cloud Minders," stardate 5818.4....
• All the little things you and I understand and expect from life, such a
  equality; kindness; justice ... -- Spock, "The Cloud Minders," stardate 5818.4....
• Hours can be centuries -- Vanna the Troglyte, "The Cloud Minders," stardate 5819.0.
• Light and warmth! That's necessary to all humanoids.
  -- Kirk, "The Cloud Minders," stardate 5818.4....
• This troubled planet [Ardana] is a place of most violent contrasts -- those who receive the rewards are totally separated from those who shoulder the burdens.
  It is not a wise leadership. -- Spock, "The Cloud Minders," stardate 5818.4....
• 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....
• It's hard to believe that something which is neither seen nor felt can do so much harm.
  That's true. But an idea can't be seen or felt. And that's what kept the Troglytes in the mines all these centuries....
• To us, violence is unthinkable. -- Ayleborne of Organia, "Errand of Mercy," stardate 3201.7.