Every 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 DruckerMost innovators are successful to the extent to which they define risks and confine them.
Peter DruckerSuccession planning often results in the selection of a weaker representation of yourself.
Peter DruckerWhenever anything is being accomplished, it is being done, I have learned, by a monomaniac with a mission.
Peter Drucker