People alone of all the resources can grow and develop.
A superior who works on his own development sets an almost irresistible example.
It's amazing how many things busy people are doing that never will be missed.
In all recorded history there has not been one economist who has had to worry about where the next meal would come from.
Results is all that separates one company from another.
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.