“Of the so-called global theories the one initially stated and defined by Bertalanffy in 1947 under the title of "general systems theory" has taken hold… Since then he has refined, modified and applied his concepts, established a society for general systems theory and published a General Systems Yearbook. Many social scientists but only a handful of psychiatrists studied, understood or applied systems theory. Suddenly, under the leadership of Dr. William Gray of Boston, a threshold was reached so that at the 122nd annual meeting of the American Psychiatric Association in 1966 two sessions were held at which this theory was discussed and regular meetings for psychiatrists were ensured for future participation in and development of this "Unified Theory of Human Behavior."”
If there be a third revolution (i.e. after the psychoanalytic and behavioristic), it is in the development of a general theory.
Grinker, Helen MacGill Hughes (ed.) (1967) Towards a Unified Theory of Human Behaviour. 2e ed. New York, Basic Books. p. ix; cited in: Ludwig von Bertalanffy (1968) General System Theory. p. 7
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Roy R. Grinker, Sr. 17
American psychiatrist and neurologist 1900–1993Related quotes
Source: General System Theory (1968), 4. Advances in General Systems Theory, p. 90-91
Mesarovic (1964) cited in: Shatrughna P. Sinha (1991) Instant encyclopaedia of geography. 1. Introduction to geography. Mittal Publications, p. 467

Source: Systems Design of Education (1991), p. 31

Source: "The origins and purposes of several traditions in systems theory and cybernetics," 1999, p. 80: About General Systems Theory
Source: General System Theory (1968), 2. The Meaning of General Systems Theory, p. 32
Miller (1956) "General behavior systems theory and summary". In: Journal of Counseling Psychology. 3 (2) 120-124. Cited in: Francis Ferguson (1975) Architecture, cities and the systems approach. p. 12
Source: 1960s, Robots, Men and Minds (1967), p. 69

Luhmann (1982) The Differentiation of Society, Translated by Stephen Holmes and Charles Larmore. Columbia University Press, New York, 1982, pp. 261. Cited in: Loet Leydesdorff (2000) " Luhmann, Habermas, and the Theory of Communication http://www.leydesdorff.net/montreal.htm".
Mihajlo D. Mesarovic and Y. Takahare (1975) General Systems Theory, Mathematical foundations. Academic Press. Cited in: Franz Pichler, Roberto Moreno Diaz (1993. Computer Aided Systems Theory. p. 134