Source: Ludwig von Bertalanffy (1901-1972) (1989), p. 4
“Ludwig von Bertalanffy, a distinguished biologist, occupies an important position in the intellectual history of the twentieth century. His contributions went beyond biology, and extended to psychology, psychiatry, sociology, cybernetics, history and philosophy. Some of his admirers even believe that von Bertalanffy's general systems theory could provide a conceptual framework for all these disciplines.”
Source: Ludwig von Bertalanffy (1901-1972) (1989), p. 2
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Thaddus E. Weckowicz 22
Canadian psychologist 1919–2000Related quotes
Source: The Causal Texture of Organizational Environments (1963), p. 22.

Source: Cybernetics and Second-Order Cybernetics (2001), p.2 Cited in: " Notes on Heylighen 2001 http://thinkipedia.wikispaces.com/Notes+on+Heylighen+2001" at thinkipedia.wikispaces.com, 2013
Source: Ludwig von Bertalanffy (1901-1972) (1989), p. 5
Source: Ludwig von Bertalanffy (1901-1972) (1989), p. 3
Beer (1974) Designing Freedom. House Of Anansi Press, Toronto cited in: B. Dawson (2007) "Bertalanffy Revisited: Operationalizing A General Systems Theory Based Business Model Through General Systems Thinking, Modeling, And Practice", In: Proceedings of the 51st Annual Meeting of the ISSS, 2007.

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

Zadeh (1962) "From circuit theory to system theory", Proceedings I.R.E., 1962, 50, 856-865. 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. 12
1960s

R. G. Collingwood (1937), as cited in: Patrick Suppes (1973), Logic, methodology and philosophy of science: Proceedings.