Quotes by W. Edwards Deming

“We installed quality control.” No. You can install a new desk, or a new carpet, or a new dean, but not quality control. Anyone that proposes to “install quality control” unfortunately has little knowledge about quality control.


We cannot rely on mass inspection to improve quality, though there are times when 100 percent inspection is necessary. As Harold S. Dodge said many years ago, ‘You cannot inspect quality into a product.’ The quality is there or it isn’t by the time it’s inspected.


Experience teaches nothing. In fact there is no experience to record without theory… Without theory there is no learning… And that is their downfall. People copy examples and then they wonder what is the trouble. They look at examples and without theory they learn nothing.


Does experience help? No! Not if we are doing the wrong things.


Putting out fires is not improvement of the process. Neither is discovery and removal of a special cause detected by a point out of control. This only puts the process back to where it should have been in the first place.


Experience teaches nothing without theory.


numerical goals set for other people, without a road map to reach the goal, have effects opposite to the effects sought.


People are entitled to joy in work.


Quality is made in the board room. A worker can deliver lower quality, but she cannot deliver quality better than the system allows.


It is not necessary to change. Survival is not mandatory.