Related:

• Offense is a human emotion. -- Sarek of Vulcan, "Journey to Babel," stardate 3842.3.
• Threats are illogical, and payment is often expensive -- Sarek of Vulcan, "Journey to Babel", stardate 3842.
  3...
• One does not thank logic. -- Sarek, "Journey to Babel," stardate 3842.4.
• Vulcans do not approve of violence. -- Spock, "Journey to Babel," stardate 3842.4.
• motivations of passion or gain -- those are reasons for murder.
  -- Shras, the Andorian Ambassador, "Journey to Babel," stardate 3842.2....
• McCoy: "Well, what do you know? I finally got the last word.
  -- "Journey To Babel", Stardate 3842.3....
• It [being a Vulcan] means to adopt a philosophy, a way of life which is logical and beneficial.
  We cannot disregard that philosophy merely for personal gain, no matter how important that gain might be....
• Andorian Ambassador: "Devote yourself to motivations of passion.
  -- "Journey To Babel", Stardate 3842.3....
• Humans smile with so little provocation. -- Spock, "Journey to Babel," stardate 3842.3.