This code is indispensable. Be it a case of commerce, industry, politics, religion, war or philanthropy in every concern there is a management function to be performed and for its performance there must be principles, that is to say acknowledged truths regarded as proven on which to rely.

p. 42-43 cited in: John B. Miner (2006) Historical Origins, Theoretical Foundations, And the Future. p. 114 - General and industrial management, 1919/1949