Mesarovic (1964) cited in: Shatrughna P. Sinha (1991) Instant encyclopaedia of geography. 1. Introduction to geography. Mittal Publications, p. 467
“What I consider completely sterile is the attitude, for instance, of Bertalanffy who is going around and jumping around for years saying that all the analytical science and molecular biology doesn’t really get to interesting results; let’s talk in terms of general systems theory … there cannot be anything such as general systems theory, it’s impossible. Or, if it existed, it would be meaningless.”
Monod (1974) "On chance and necessity". In F. J. Ayala & T. Dobzhansky, (Eds.), Studies in the philosophy of biology. cited in: Brian R. Gaines (1979) " General systems research: quo vadis? http://pages.cpsc.ucalgary.ca/~gaines/reports/SYS/GS79/GS79.pdf", General Systems, Vol. 24 (1979), p. 4
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Jacques Monod 4
French biologist 1910–1976Related quotes
Source: Ludwig von Bertalanffy (1901-1972) (1989), p. 4

Source: Systems Design of Education (1991), p. 31
Source: Ludwig von Bertalanffy (1901-1972) (1989), p. 2
Source: "Some comments on systems and system theory," (1986), p. 1

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".

Source: "The origins and purposes of several traditions in systems theory and cybernetics," 1999, p. 80: About General Systems Theory
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