Related:

• You Earth people glorified organized violence for forty centuries.
  But you imprison those who employ it privately. -- Spock, "Dagger of the Mind", stardate 2715.1...
• Insults are effective only where emotion is present.
  -- Spock, "Who Mourns for Adonais?" stardate 3468.1....
• Worry is a human emotion. -- Spock, "Journey to Babel," stardate 3842.4
• Vulcans do not approve of violence. -- Spock, "Journey to Babel," stardate 3842.4.
• Humans do claim a great deal for that particular emotion (love).
  -- Spock, "The Lights of Zetar," stardate 5725.6....
• One of the advantages of being a captain is being able to ask for advice without necessarily having to take it.
  -- Kirk, "Dagger of the Mind," stardate 2715.2....
• The release of emotion is what keeps us healthy. Emotionally healthy.
  That may be, Doctor. However, I have noted that the healthy release of emotion is frequently unhealthy for those closest to you....
• Violence in reality is quite different from theory.
  -- Spock, "The Cloud Minders," stardate 5818.4....
• Deriving sustenance from emotion is not unknown in the galaxy.
  And fear is among the strongest and most violent of the emotions....