The most important work of the executive is to identify the changes that have already happened. The important thing . . . is to exploit the changes that have already occurred and to use them as opportunities.
Peter DruckerThere is nothing so useless as doing efficiently that which should not be done at all.
Peter Drucker[Entrepreneurship] is by no means hunch or gamble. But it also is not precisely science. Rather, it is judgment.
Peter Drucker