As soon as you move one step up from the bottom, your effectiveness depends on your ability to reach others through the spoken and written word.
Peter DruckerOf all the decisions an executive makes, none is as important as the decisions about people, because they determine the performance capacity of the organization.
Peter DruckerEvery three or four years I pick a new subject. It may be Japanese art; it may be economics. Three years of study are by no means enough to master a subject but they are enough to understand it. SO for more than 60 years I have kept studying one subject at a time.
Peter Drucker