Related:

• Never, ever lie to someone you love unless you're absolutely sure they'll never find out the truth.
• Whenever someone tells you to take their advice, you can be pretty sure that they're not using it.
• If someone gives you so-called good advice, do the opposite
  you can be sure it will be the right thing nine out of ten times. -- Anselm Feuerbach...
• When someone tells you something defies description, you can be pretty sure he's going to have a go at it anyway.
  -- Clyde B. Aste...
• Satan: Come on, Lisa. Watch a little cable with us.
  Heh heh. It won't cost you a thing ... EXCEPT YOUR SOUL!...
• It doesn't much signify whom one marries, for one is sure to find out next morning it was someone else.
  -- Roge...
• Do not attempt to do a thing unless you are sure of yourself
  but do not relinquish it simply because someone else is not sure of you. -- Stewart E. White...
• If you keep a thing for seven years, you are sure to find a use for it. -- Sir Walter Sco