According to the management expert Peter F. Drucker, the term "entrepreneur" (from the French, meaning "one who takes into hand") was introduced two centuries ago by the French economist Jean-Baptiste Say to characterize a special economic actor-not someone who simply opens a business, but someone who "shifts economic resources out of an area of lower and into an area of higher productivity and greater yield." The twentieth-century growth economist Joseph A. Schumpeter characterized the entrepreneur as the source of the "creative destruction" necessary for major economic advances.