Pareto's Principle: you generally spend 80% of your time on 20% of the project.
...every successful quality revolution has included the participation of upper management. We know of no exceptions.
For many phenomena, 80% of consequences stem from 20% of the causes.
Without a standard there is no logical basis for making a decision or taking action.
All improvement happens project by project and in no other way.
It is most important that top management be quality-minded. In the absence of sincere manifestation of interest at the top, little will happen below.