“Only when field maintenance is part of the original design can it be safely controlled”
The Art of Doing Science and Engineering: Learning to Learn (1991)
Context: The more complex the designed system the more field maintenance must be central to the final design. Only when field maintenance is part of the original design can it be safely controlled... This applies to both mechanical things and to human organizations.
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Richard Hamming 90
American mathematician and information theorist 1915–1998Related quotes

“No country can afford to have its prosperity originated by a small controlling class.”
Section I: “The Old Order Changeth”, p. 17 http://books.google.com/books?id=MW8SAAAAIAAJ&pg=PA17&dq=%22No+country+can+afford%22
1910s, The New Freedom (1913)
Context: No country can afford to have its prosperity originated by a small controlling class. The treasury of America lies in those ambitions, those energies, that cannot be restricted to a special favored class. It depends upon the inventions of unknown men, upon the originations of unknown men, upon the ambitions of unknown men. Every country is renewed out of the ranks of the unknown, not out of the ranks of those already famous and powerful and in control.

“Destiny can contain a few extra threads in her design and still accomplish her original aims.”
Book 3, Chapter 4 “Two Black Swords” (p. 114)
The Elric Cycle, Elric of Melniboné (1972)

Max Wertheimer (1924), cited in: Heinz L. Ansbacher (ed.), The Individual Psychology of Alfred Adler. 1954, p. 11

Source: Women, Race and Class (1983), Chapter 12, "Racism, Birth Control and Reproductive Rights"
Source: Philosophy and Real Politics (2008), p. 49.

"Many people believe Samuel Johnson said it, but no one seems to have found it anywhere in his works or letters, or, for that matter any of the biographies of him by his contemporaries. I'm basing that on what's been included in Primary Source Media's CD-ROM of Johnson and Boswell. The CD-ROM includes all of Johnson's writings in the canon, Boswell's Life of Johnson and Tour of the Hebrides, as well as accounts from Hester Thrale, Sir John Hawkins, Fanny Burney, plus O.M. Brack's 'Early Biographies.' In short, practically nothing from the 18th Century has been left out. In addition, I've also consulted 'The Beauties of Johnson,' an 18th Century collection of Johnson quotations."
“Your manuscript is both good and original. …” http://www.samueljohnson.com/goodorig.html at The Samuel Johnson Sound Bite Page http://www.samueljohnson.com/ Retrieved 2013-07-07
Misattributed