“A manager is responsible for the application and performance of knowledge.”
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Peter F. Drucker 180
American business consultant 1909–2005Related quotes

The New Economics for Industry, Government, Education (1993)
Source: Project management: a systems approach to planning, scheduling, and controlling (1979), p. 95-96 (1e ed. 1979) cited in: Howard G. Birnberg (1992) New directions in architectural and engineering practice. p. 192

“[[Management] has authority only as long as it performs.”
Source: 1960s - 1980s, MANAGEMENT: Tasks, Responsibilities, Practices (1973), Part 1, p. 301
Methods of Mathematics Applied to Calculus, Probability, and Statistics (1985)

“All knowledge is acquired through the application of reason and has a physical basis.”
Source: Sustainable History and the Dignity of Man (2009), p.28

Source: 1960s - 1980s, MANAGEMENT: Tasks, Responsibilities, Practices (1973), Part 1, p. 343