“[This work urges] a clearer separation, in the construction of economic knowledge, between reasoning and recognition of facts, for the better protection of both.”
Source: Three Essays (1957), p. viii
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Tjalling Koopmans 16
Dutch American economist 1910–1985Related quotes

Source: Sustainable History and the Dignity of Man (2009), p.437
"Shields of Expectation—and Actuality", p. 425
Eight Little Piggies (1993)

“Knowledge of the fact differs from knowledge of the reason for the fact.”
I. 13, 78a.22
Posterior Analytics
Kenneth Boulding (1977) Economic Development as an Evolutionary System, Fifth World Congress of the International Economic Association, Tokyo, Aug.-Sept. 1977.
1970s

Source: Quality, Productivity and Competitive Position, (1982), p. 352–353

“I do not separate between work and life.”
Nick Compton, Wallpaper* January 2017, p. 134

Ko Wen-je (2017) cited in " UPDATED: Ko meets China's Taiwan chief but eases up on rhetoric http://www.chinapost.com.tw/taiwan/china-taiwan-relations/2017/07/03/499165/updated-ko.htm" on The China Post, 3 July 2017.