1909 - 2005
Peter Drucker (1909–2005) was an Austrian-born American management consultant, educator, and author, widely considered the father of modern management theory. Known for his innovative ideas on management principles and practices, Drucker wrote numerous influential books, such as "The Practice of Management" and "Innovation and Entrepreneurship", shaping management thinking for generations to come.
There is nothing so useless as doing efficiently that which should not be done at all.