If you ask managers what they do, they will most likely tell you that they plan, organize, coordinate and control. Then watch what they do. Don't be surprised if you can't relate what you see to those four words.
Learning is not doing; it is reflecting on doing.
Leadership, like swimming, cannot be learned by reading about it.
Management is a curious phenomenon. It is generously paid, enormously influential, and significantly devoid of common sense
It is time to recognize conventional MBA programs for what they are - or else to close them down. They are specialized training in the functions of business, not general educating in the practice of management.