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BUSINESS > writer, educator, management consultant > Peter Drucker
Knowledge has to...
Vendor: BUSINESS
Knowledge has to be improved, challenged, and increased constantly, or it vanishes.
Source: In The Ultimate Success Quotations Library, 1997.
-- Peter Drucker, (Nov 9 1909-2005), US writer, educator, management consultant; He was an influential force in business management; wrote Innovation and Entrepreneurship, 1985.