We Must Understand Variation.

Quality Comes Not From Inspection, But From Improvement Of The Production Process.

Knowledge Is The Key.

A Manager Of People Needs To Understand That All People Are Different. This Is Not Ranking People. He Needs To Understand That The Performance Of Anyone Is Governed Largely By The System That He Works In, The Responsibility Of Management.

One Cannot Be Successful On Visible Figures Alone ... The Most Important Figures That One Needs For Management Are Unknown Or Unknowable, But Successful Management Must Nevertheless Take Account Of Them.

There Must Be Consistency In Direction.