Peter Drucker Quotes
Knowledge has to be improved, challenged, and increased constantly, or it vanishes.
Citations
Drucker, Peter F. Post-Capitalist Society. HarperBusiness, 1993, p. 45.
Related Quotes
Peter Ferdinand Drucker was an Austrian management consultant, educator, and author, whose writings contributed to the philosophical and practical foundations of the modern business corporation. He was also a leader in the development of management education, he invented the concept known as management by objectives and self-control, and he has been described as "the founder of modern management".