The better a man is, the more mistakes he will make, for the more new things he will try. I would never promote to a top-level job a man who was not making mistakes...otherwise he is sure to be mediocre.
Peter DruckerThere's nothing so useless than executing a task efficiently when it actually never should have been executed at all.
Peter DruckerThe greatest danger in times of turbulence is not the turbulence; it is to act with yesterday's logic.
Peter Drucker