A leader must have knowledge. ...

A leader must have knowledge. A leader must be able to teach.
A leader must have knowledge. A leader must be able to teach.
 W. Edwards Deming

More phrases

Courage - a perfect sensibility of the measure of danger, and a mental willingness to endure it.
 William Tecumseh Sherman
The same mentality that leads to environmental despoliation, environmental destruction, also leads to damage to people.
 Naomi Oreskes
You can't break poor people mentality. Once you grow up poor, you don't take anything for granted. It can have the negative side also because you can never truly be relaxed.
 Will Smith
The man with the average mentality, but with control, with a definite goal, and a clear conception of how it can be gained, and above all, with the power of application and labor, wins in the end.
 William Howard Taft
I think society had to grow up to the mentality of Peter Norman.
 John Carlos

Quotes from the same author

It is not enough that top management commit themselves for life to quality and productivity. They must know what it is that they are committed to - that is, what they must do. These obligations cannot be delegated. Support is not enough; action is required.
 W. Edwards Deming
People are born with intrinsic motivation, self-esteem, dignity, curiosity to learn, joy in learning.
 W. Edwards Deming
Monetary rewards are not a substitute for intrinsic motivation.
 W. Edwards Deming
Our prevailing system of management has destroyed our people. People are born with intrinsic motivation, self-respect, dignity, curiosity to learn, joy in learning. The forces of destruction begin with toddlers - a prize for the best Halloween costume, grades in school, gold stars - and on up through the university. On the job people, teams, and divisions are ranked, reward for the top, punishment for the bottom. Management by Objectives, quotas, incentive pay, business plans, put together separately, division by division, cause further loss, unknown and unknowable.
 W. Edwards Deming
The greatest waste … is failure to use the abilities of people…to learn about their frustrations and about the contributions that they are eager to make.
 W. Edwards Deming