Source: 1950s, The Skills of the Economist, 1958, p. 14
“To contribute usefully to the advance of science, one must sometimes not disdain from undertaking simple verifications.”
As quoted in The Life and Science of Léon Foucault : The Man Who Proved the Earth Rotates (2003) by William Tobin, p. 72, ISBN 0521808553
Help us to complete the source, original and additional information
Léon Foucault 5
French physicist 1819–1868Related quotes

Source: Aphorisms and Reflections (1901), p. 148

“The man of science has learned to believe in justification, not by faith, but by verification.”
On the advisableness of improving natural knowledge (1866) http://www.gutenberg.org/dirs/etext01/thx1410.txt
1860s
Source: Collected Essays of Thomas Henry Huxley
Context: The improver of natural knowledge absolutely refuses to acknowledge authority, as such. For him, scepticism is the highest of duties; blind faith the one unpardonable sin. And it cannot be otherwise, for every great advance in natural knowledge has involved the absolute rejection of authority, the cherishing of the keenest scepticism, the annihilation of the spirit of blind faith; and the most ardent votary of science holds his firmest convictions, not because the men he most venerates hold them; not because their verity is testified by portents and wonders; but because his experience teaches him that whenever he chooses to bring these convictions into contact with their primary source, Nature — whenever he thinks fit to test them by appealing to experiment and to observation — Nature will confirm them. The man of science has learned to believe in justification, not by faith, but by verification.

“Science has only one commandment: contribution.”
Andrea, in Scene 13, p. 122
As translated by Howard Brenton (1980)
Life of Galileo (1939)
Variant: Science knows only one commandment — contribute to science.
Robert Grosseteste and the Origins of Experimental Science 1100-1700 (1953)
Source: The Rainbow: From Myth to Mathematics (1959), p. 88

Wieland; or, the Transformation (1798)
Context: I feel little reluctance in complying with your request. You know not fully the cause of my sorrows. You are a stranger to the depth of my distresses. Hence your efforts at consolation must necessarily fail. Yet the tale that I am going to tell is not intended as a claim upon your sympathy. In the midst of my despair, I do not disdain to contribute what little I can for the benefit of mankind. I acknowledge your right to be informed of the events that have lately happened in my family. Make what use of the tale you shall think proper. If it be communicated to the world, it will inculcate the dusty of avoiding deceit. It will exemplify the force of early impressions, and show the immeasurable evils that flow from an erroneous or imperfect discipline.