Source: Just a Theory: Exploring the Nature of Science (2005), Chapter 2, “Just a Theory: What Scientists Do” (p. 24)
“In reality the cycles we have the occasion to observe are generally not damped. How can the maintenance of the swings be explained? Have theses dynamic laws deduced from theory and showing damped oscillations no value in explaining the real phenomena, or in what respect do the dynamic laws need to be completed in order to explain the real happenings? They (dynamic laws) only form one element of the explanation: they solve the propagation problem. But the impulse problem remains.”
Source: 1930s, Propagation problems and impulse problems in dynamic economics, 1933, p. 197
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Ragnar Frisch 26
Norwegian economist 1895–1973Related quotes

Quote c. 1915 in 'Cubofuturism', Malevich, in his Essays on Art, op. cit., vol 2; as quoted in Futurism, ed. By Didier Ottinger; Centre Pompidou / 5 Continents Editions, Milan, 2008, p. 59
1910 - 1920

Accord de différentes loix de la nature qui avoient jusqu’ici paru incompatibles (1744)

Source: The Other Side Of The Coin (2008), Chapter 10, Good Versus Evil, p. 304

“True revolutionary doctrine teaches that the only law is rationalism and dynamic optimism.”
Source: Singularity Sky (2003), Chapter 11, “Circus of Death” (p. 234)
Do astronomical data contradict the existence of dynamically relevant cold or dark matter? (seminar talk at Columbia U. Astronomy Department), Pavel Kroupa, 16 Oct. 2014 http://www.astro.columbia.edu/event?eid=185,