Peter Ferdinand Drucker (; German: [ˈdʀʊkɐ]; November 19, 1909 – November 11, 2005) was an Austrian American management consultant, educator, and author, whose writings contributed to the philosophical and practical foundations of modern management theory. He was also a leader in the development of management education, and invented the concepts...
Management is doing things right; leadership is doing the right things.
With the past, I have nothing to do; nor with the future. I live now.