keithcraft.com
LeadershipologyBeta

Peter F. Drucker: Whenever anything is being accomplished, it is being done, I have learned, by a…

Whenever anything is being accomplished, it is being done, I have learned, by a monomaniac with a mission.
Peter F. DruckerSourced
Source
From the book Adventures of a Bystander, 1979 (as listed on Wikiquote; no page given)

Every quote on Focus