Edison Was "the World's Greatest Inventor and World's Worst Businessman"
(p. 165) BY THE EARLY twentieth century, Edison had earned a reputation as "the world's greatest inventor and world's worst businessman." The phrasing, attributed to Henry Ford, is memorable, even if both characterizations as greatest and worst are too extreme to be accepted literally.
Stross, Randall E. The Wizard of Menlo Park: How Thomas Alva Edison Invented the Modern World. New York: Crown Publishers, 2007.