Related:

• I'm not going to make the same mistake once.
• The only thing that ought to be virgin are forests.
• I am a computer. As such I never have or will make a mistake or error (I thought I did once, but I was wrong).
• How can you afford something like this, Ned? I mean, I get your mail once in a while, and you make only $
  27 a week more than I do. -- Homer, "Call of the Simpso...
• A common mistake people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
  -- Douglas Adams -- Mostly Harmle...
• The only way to make something completely foolproof is to keep it away from fools.
• If there is an opportunity to make a mistake, sooner or later the mistake will be made.
  -- Edmund C. Berkeley...
• No one is listening until you make a mistake.
• Maybe if we attack it, it will get confused, and make a mistake.