Related:

• The oldest and strongest emotion of mankind is fear, and the oldest and strongest kind of fear is fear of the unknown.
  -- H.P. Lovecraft, 'Supernatural Horror in Literature'...
• Anger is a relative state. -- Spock, "Wolf in the Fold," stardate 3615.4.
• As we know, the value of pi is a transcendental figure without resolution.
  -- Spock, "Wolf in the Fold," stardate 3615.4....
• In the strict scientific sense we all feed on death -- even vegetarians.
  -- Spock, "Wolf in the Fold," stardate 3615.4....
• Women are more easily and more deeply terrified ...
  generating more sheer horror than the male of the species....
• 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....
• What is it in you humans that requires an overwhelming display of emotion in a situation such as this?
  Two men pursue the only reasonable course of action indicated, and yet you feel that something else is necessary....
• Emotions are alien to me. I'm a scientist. -- Spock, "This Side of Paradise," stardate 3417.3.
• Where there's no emotion, there's no motive for violence.
  -- Spock, "Dagger of the Mind", stardate 2715.1...