“We have no aces to what the world is, to ontology, only to descriptions of the world… that is to say, epistemology… We should never say something in the world: 'it is a system'; only: "it may be described as a system.'”

— Peter Checkland

Checkland 1983, p. 671 cited in Stephen K. Probert (1998) "The Metaphysical Foundations of Soft and Hard Information Systems Methodologies". In: Robert Macredie (1998) Modelling for Added Value. p. 86

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Peter Checkland10

British management scientist 1930

John Mingers researcher

John Mingers (2006) Realising Systems Thinking: Knowledge and Action in Management Science. p. 87.

“There is in the lovely Martian landscape not a footprint, not an artifact, not even an old beer can, not a blade of grass, not a kangaroo rat, not even, so far as we can tell, a microbe. Mars and the Moon and Venus… the only planets that we've landed on—are utterly lifeless. …in our solar system we may discover that there is life only on this world. This says that life is not guaranteed, that life requires something special, something improbable.”

Carl Sagan (1934–1996) American astrophysicist, cosmologist, author and science educator

The Varieties of Scientific Experience: A Personal View of the Search for God (2006)

“The system is run by the few with the few as the main beneficiaries. Most of the people in the world have no say in these systems and are either not helped or are adversely affected by them.”

George Ritzer (1940) American sociologist

Source: Globalization - A Basic Text (2010), Chapter 7, Structuring the Global Economy, p. 189

“[A world-system is] a system that is a world and which can be, most often has been, located in an area less than the entire globe. World-systems analysis argues that the units of social reality within which we operate, whose rules constrain us, are for the most part such world-systems (other than the now extinct, small mini-systems that once existed on the earth). World-system analysis argues that there have been thus far only two varieties of world-systems: world-economies and world empires. A world-empire (examples, the Roman Empire, Han China) are large bureaucratic structures with a single political center and an axial division of labor, but multiple cultures. A world-economy is a large axial division of labor with multiple political centers and multiple cultures.”

Immanuel Wallerstein (1930–2019) economic historian

Immanuel Wallerstein (2004, p. 98), as cited in: Graham Scambler. Contemporary Theorists for Medical Sociology, 2012. p. 255

“Often,” he says, “what we take from the spirit world is only a reflection of what lies inside ourselves.”

Charles de Lint (1951) author

“Waifs and Strays”, p. 25
The Ivory and the Horn (1996)

“But what world says that [I'm wicked]? It can only be the next world. This world and I are on excellent terms.”

Oscar Wilde book The Picture of Dorian Gray

Source: The Picture of Dorian Gray

“We are told in the White Paper that there is danger against which we have to guard ourselves. We do not think you can do it by national defence. We think you can only do it by moving forward to a new world – a world of law, the abolition of national armaments with a world force and a world economic system. I shall be told that that is quite impossible.”

Clement Attlee (1883–1967) Former Prime Minister of the United Kingdom

Speech http://hansard.millbanksystems.com/commons/1935/mar/11/defence in the House of Commons (11 March 1935). Attlee's concluding observation was met by Conservative cries of "Hear, hear", with one MP shouting "Tell that to Hitler" according to The Times of 12 March 1935. <br class="br">1930s