
Source: Talks on Pedagogics, (1894), p. 64. Reported in Robert Edouard Moritz. Memorabilia mathematica; or, The philomath's quotation-book https://archive.org/stream/memorabiliamathe00moriiala#page/81/mode/2up, (1914), p. 263
Source: The Theory of Political Economy (1871), Chapter I, Introduction, p. 40.
Source: Talks on Pedagogics, (1894), p. 64. Reported in Robert Edouard Moritz. Memorabilia mathematica; or, The philomath's quotation-book https://archive.org/stream/memorabiliamathe00moriiala#page/81/mode/2up, (1914), p. 263
Conor Clarke, An Interview With Paul Samuelson, Part One http://www.theatlantic.com/politics/archive/2009/06/an-interview-with-paul-samuelson-part-one/19572/ (2009)
New millennium
“Politics is not an exact science.”
Die Politik ist keine exakte Wissenschaft.
Speech to Prussian upper house (18 December 1863)
Politics is not a science, as the professors are apt to suppose. It is an art.
Expression in the Reichstag (1884), as quoted in The Quote Verifier : Who Said What, Where, and When (2006) by Ralph Keyes
1860s
Variant: Die Politik ist keine Wissenschaft, wie viele der Herren Proffessoren sich einbilden, sondern eine Kunst.
“Economics is not an exact science.”
Source: The Age of Uncertainty (1977), Chapter 1, p. 36
“An exact science is one that admits loss.”
The German Order
The Need for Transcendence in the Postmodern World (1994)
Context: Classical modern science described only the surface of things, a single dimension of reality. And the more dogmatically science treated it as the only dimension, as the very essence of reality, the more misleading it became. Today, for instance, we may know immeasurably more about the universe than our ancestors did, and yet, it increasingly seems they knew something more essential about it than we do, something that escapes us.
“Mathematical Reasoning is not only exact; it has its own criteria of reality”
pg 52.
Science in a Free Society (1978)
As quoted in Dictionary of Scientific Biography (1970 - 1990) edited by M Steck.