Related:

• Life and death are seldom logical. But attaining a desired goal always is.
  -- McCoy and Spock, "The Galileo Seven," stardate 2821.7...
• Totally illogical, there was no chance. -- Spock, "The Galileo Seven," stardate 2822.3.
• I'm frequently appalled by the low regard you Earthmen have for life.
  -- Spock, "The Galileo Seven," stardate 2822.3....
• It is more rational to sacrifice one life than six.
  -- Spock, "The Galileo Seven," stardate 2822.3....
• Kirk: "You're not going to admit that, for the first time in your life, you made a completely emotional decision based on desperation?
  Spock: "No, sir." Kirk: "Mister Spock, you're a stubborn man!...
• Desperation is a highly emotional state of mind. -- Kirk, "The Galileo Seven," stardate 2822.3.
• Respect is a rational process. -- McCoy, "The Galileo Seven," stardate 2822.3.
• I realize that command does have its fascination, even under circumstances such as these, but I neither enjoy the idea of command nor am I frightened of it.
  It simply exists, and I will do whatever logically needs to be done....
• Extreme feminine beauty is always disturbing. -- Spock, "The Cloud Minders," stardate 5818.4.