Jef Menguin

“The effective executive, therefore, asks: “What can my boss do really well?” “What has he done really well?” “What does he need to know to use his strength?” “What does he need to get from me to perform?” He does not worry too much over what the boss cannot do.”
― Peter F. Drucker, The Effective Executive

“Managers are action-focused; they are not philosophers and should not be.”
― Peter F. Drucker, Management: Tasks, Responsibilities, Practices

“A man should never be appointed to a managerial position if his vision focuses on people’s weaknesses rather than on their strengths. The man who always knows exactly what people cannot do, but never sees anything they can do, will undermine the spirit of his organization.”
― Peter F. Drucker, Management: Tasks, Responsibilities, Practices

“It takes far more energy and work to improve from incompetence to mediocrity than it takes to improve from first-rate performance to excellence.”
― Peter F. Drucker, Managing Oneself