Source: Principles of Gestalt Psychology, 1935, p. 176
Context: Even these humble objects reveal that our reality is not a mere collocation of elemental facts, but consists of units in which no part exists by itself, where each part points beyond itself and implies a larger whole. Facts and significance cease to be two concepts belonging to different realms, since a fact is always a fact in an intrinsically coherent whole. We could solve no problem of organization by solving it for each point separately, one after the other; the solution had to come for the whole. Thus we see how the problem of significance is closely bound up with the problem of the relation between the whole and its parts. It has been said: The whole is more than the sum of its parts. It is more correct to say that the whole is something else than the sum of its parts, because summing is a meaningless procedure, whereas the whole-part relationship is meaningful.
“The characteristic of the organism is first that it is more than the sum of its parts and second that the single processes are ordered for the maintenance of the whole.”
Source: 1920s, Kritische Theorie der Formbildung (1928, 1933), p. 305; as cited in: Cliff Hooker ed. (2011) Philosophy of Complex Systems. p. 189
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Ludwig von Bertalanffy 65
austrian biologist and philosopher 1901–1972Related quotes

“A system is more than the sum of its parts; it is an indivisible whole.”
It loses its essential properties when it is taken apart. The elements of a system may themselves be systems, and every system may be part of a larger system.
Ackoff (1973) "Science in the Systems Age: beyond IE, OR and MS." in: Operations Research Vol 21, pp. 664.
1970s

“The whole is greater than the sum of its parts.”

Source: Science and Sanity (1933), p. 64.
Context: Any organism must be treated as-a-whole; in other words, that an organism is not an algebraic sum, a linear function of its elements, but always more than that. It is seemingly little realized, at present, that this simple and innocent-looking statement involves a full structural revision of our language...
“A system is more than the sum of its parts.”
Source: Sociology and modern systems theory (1967), p. 42.
Source: 1930s, L. von Bertalanffy (1934). "Wandlungen des biologischen Denkens", Neue Jahrbücher für Wissenschaft und Jugendbildung, 10:339-366; as cited in Manfred Drack (2008). " Ludwig von Bertalanffy's Early System Approach http://journals.isss.org/index.php/proceedings52nd/article/viewFile/1032/322"

Ackoff (1973) "Science in the Systems Age: beyond IE, OR and MS." in: Operations Research Vol 21, pp. 664.
1970s

Source: The Book on the Taboo Against Knowing Who You Are (1966), p. 73