Related:

• Power is danger. -- The Centurion, "Balance of Terror," stardate 1709.2.
• In this galaxy, there's a mathematical probability of three million Earth-type planets.
  And in all of the universe, three million, million galaxies like this....
• We are wise enugh to know we are wise enough not to interfere with the way of a man or another world.
  -- Kirk, "A Private Little War," stardate 4211.8...
• Another war...must it always be so? How many comrades have we lost in this way?
  ... Obedience. Duty. Death, and more death... -- Romulan Commander, "Balance of Terror," stardate 1709....
• We once were as you are. Spears and arrows. There came a time when our weapons grew faster than our wisdom, and we almost destroyed ourselves.
  We learned from this to make a rule during all our travels never to cause the same to happen to other worlds ....
• The balance of power. -- Sir Robert Walpole (1676-1745) -- Speech, 1741
• War is never imperative. -- McCoy, "Balance of Terror," stardate 1709.2
• War isn't a good life, but it's life. -- Kirk, "A Private Little War," stardate 4211.8.
• Picard: "One more thing, Gul Macet. Maxwell was right.
  Those ships were not carrying scientific equipment, were they?...