John D. Rockefeller Art Quotations

What constitutes a good manager in this field? He must be knowledgeable in the art with which he is concerned, an impresario, labor negotiator, diplomat, educator, publicity and public relations expert, politician, skilled businessman, a social sophisticate, a servant of the community, a tireless leader - becomingly humble before authority - a teacher, a tyrant, and a continuing student of the arts.

Do not many of us who fail to achieve big things. . .fail because we lack concentration--the art of concentrating the mind on the thing to be done at the proper time and to the exclusion of everything else?