The correct assumption is that what individuals have learned by age twenty-one will begin to become obsolete five to ten years later and will have to be replaced-or at least refurbished-by new learning, new skills, new knowledge.
Peter DruckerInformation is the manager's main tool, indeed the manager's capital, and it is he who must decide what information he needs and how to use it.
Peter DruckerA fundamental responsibility of leadership is make sure that everybody knows the mission, understands it, lives it.
Peter Drucker