Related:

• The Roman Rule The one who says it cannot be done should never interrupt the one who is doing it.
• The one who says it cannot be done should never interrupt the one who is doing it.
• The one who says it cannot be done should never interrupt the one who is doing it.
  -- The Roman Rule...
• Never let someone who says it cannot be done interrupt the person who is doing it.
• The Roman Rule: The one who says it can't be done shouldn't interrupt the one doing it.
• He who receives a good turn should never forget i
  he who does one should never remember it. -- Charro...
• The world is moving so fast these days that the man who says it can't be done is generally interrupted by someone doing it.
  -- E. Hubbard...