Every enterprise is learning and teaching institution. Training and development must be built into it on all levels, training and development that never stop.
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