Related:

• If there is an opportunity to make a mistake, sooner or later the mistake will be made.
  -- Edmund C. Berkeley...
• Most problems have either many answers or no answer.
  Only a few problems have one answer. -- Edmund C. Berkeley...
• Most general statements are false, including this one.
  -- Alexander Dumas, or maybe Edmund C. Berkeley...
• The moment you have worked out an answer, start checking it.
  It probably isn't right. -- Edmund C. Berkeley...
• Everything is more complicated than it looks to most people. -- Frederick Lewis Alle
• An exception TESTS a rule; it NEVER proves it. -- Edmund C. Berkeley
• Never decide to buy anything while listening to the salesman. -- Edmund C. Berkeley
• Our patience will achieve more than our force. -- Edmund Burke
• What our economists call a depressed area almost always turns out to be a cleaner, freer, more livable place than most.
  -- Edward Abbey...