Source: 1960s - 1970s, The Systems Approach and Its Enemies (1979), p. 53
“Common to all these enemies is that none of them accepts the reality of the "whole system": we do not exist in such a system. Furthermore, in the case of morality, religion, and aesthetics, at least a part of our reality reality as human is not "in" any system, and yet it plays a central role in our lives.
To me these enemies provide a powerful way of learning about the systems approach, precisely because they enable the rational mind to step outside itself and to observe itself”
from the vantage point of the enemies
Churchman had identified four generic enemies: politics, morality, religion, and aesthetics.
Source: 1960s - 1970s, The Systems Approach and Its Enemies (1979), p. 24; Partly as cited in: Reynolds, Martin (2003). "Social and Ecological Responsibility: A Critical Systemic Perspective." In: Critical Management Studies Conference 'Critique and Inclusively: Opening the Agenda'; in the stream OR/Systems Thinking for Social Improvement, 7-9 July 2003, Lancaster University, UK.
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C. West Churchman 64
American philosopher and systems scientist 1913–2004Related quotes

Béla H. Bánáthy (1994) Creating our future in an age of transformation. p. 1; Cited in: Sherryl Stalinski (2005) A Systems View of Social Systems, Culture and Communities: The Legacy of Bela H. Banathy. Saybrook Graduate School. p. 11.

Trey Bundy as published on FatFreeRadio.net on December 4, 2000.

1960s, Operating Manual for Spaceship Earth (1963)
Context: Synergy is the only word in our language that means behavior of whole systems unpredicted by the separately observed behaviors of any of the system's separate parts or any subassembly of the system's parts. There is nothing in the chemistry of a toenail that predicts the existence of a human being.

Pt. 2, ch. 20
Atticus Finch
To Kill a Mockingbird (1962)
Context: I’m no idealist to believe firmly in the integrity of our courts and in the jury system — that is no ideal to me, it is a living, working reality. Gentlemen, a court is no better than each man of you sitting before me on this jury. A court is only as sound as its jury, and a jury is only as sound as the men who make it up.

Ackoff (1999). "Disciplines, the two cultures and the scianities". Systems Research and Behavioral Science. 16 (6), p. 537. Cited in: Sherryl Stalinski (2005) A Systems View of Social Systems, Culture and Communities. Saybrook Graduate School. p. 5.
1990s
Source: 1960s - 1970s, The Systems Approach and Its Enemies (1979), p. 69; As cited in: Book Review: The Systems Approach and its Enemies http://phd-take-2.wikispaces.com/The+Systems+Approach+and+its+Enemies
At the other extreme is a set of parts that are completely unrelated: that is, a change in each part depends only on that part alone. The variation in the set is the physical sum of the variations of the parts. Such behavior is called independent or physical summativity.
Source: Definition of System, 1956, p. 23