“"One sees, from this Essay, that the theory of probabilities is basically just common sense reduced to calculus; it makes one appreciate with exactness that which accurate minds feel with a sort of instinct, often without being able to account for it."”

— Pierre-Simon Laplace

"On voit, par cet Essai, que la théorie des probabilités n'est, au fond, que le bon sens réduit au calcul; elle fait apprécier avec exactitude ce que les esprits justes sentent par une sorte d'instinct, sans qu'ils puissent souvent s'en rendre compte."
From the Introduction to Théorie Analytique des Probabilités http://visualiseur.bnf.fr/Visualiseur?Destination=Gallica&O=NUMM-88764, second and later editions; also published separately as Essai philosophique sur les Probabilités (1814). Œuvres complètes de Laplace, tome VII, p. cliii, Paris: Gauthier-Villars, 1878-1912.
Also reported as: "The theory of probabilities is at bottom nothing but common sense reduced to calculus; it enables us to appreciate with exactness that which accurate minds feel with a sort of instinct for which ofttimes they are unable to account."
Or as: "Probability theory is nothing but common sense reduced to calculation."

Original

On voit, par cet Essai, que la théorie des probabilités n'est, au fond, que le bon sens réduit au calcul; elle fait apprécier avec exactitude ce que les esprits justes sentent par une sorte d'instinct, sans qu'ils puissent souvent s'en rendre compte.

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Pierre-Simon Laplace 15

French mathematician and astronomer 1749–1827

Richard Hamming (1915–1998) American mathematician and information theorist

Methods of Mathematics Applied to Calculus, Probability, and Statistics (1985)

“The necessity of this psychic stepping back (or up) to the metalevel is probably what is meant when people say that a sense of perspective is needed for an appreciation of humor. It also explains why dogmatists, idealogues, and others with one-track minds are often notoriously humorless.”

John Allen Paulos (1945) American mathematician

Source: Mathematics and Humor: A Study of the Logic of Humor (1980), Chapter 2, “Axioms, Levels, and Iteration” (p. 27)

“Strabo rejects this theory as insufficient to account for all the phenomena, and he proposes one of his own, the profoundness of which modern geologists are only beginning to appreciate.”

Charles Lyell book Principles of Geology

Chpt.2, p. 21
Principles of Geology (1832), Vol. 1
Context: But Strabo rejects this theory as insufficient to account for all the phenomena, and he proposes one of his own, the profoundness of which modern geologists are only beginning to appreciate. 'It is not,' he says, 'because the lands covered by seas were originally at different altitudes, that the waters have risen, or subsided, or receded from some parts and inundated others. But the reason is, that the same land is sometimes raised up and sometimes depressed, and the sea also is simultaneously raised and depressed, so that it either overflows or returns into its own place again. We must therefore ascribe the cause to the ground, either to that ground which is under the sea, or to that which becomes flooded by it, but rather to that which lies beneath the sea, for this is more moveable, and, on account of its humidity, can be altered with great celerity. It is proper,' he observes in continuation, 'to derive our explanations from things which are obvious, and in some measure of daily occurrence, such as deluges, earthquakes, volcanic eruptions, and sudden swellings of the land beneath the sea;' for the last raise up the sea also, and when the same lands subside again, they occasion the sea to be let down. And it is not merely the small, but the large islands also, and not merely the islands, but the continents, which can be lifted up together with the sea; and both large and small tracts may subside, for habitations and cities, like Bure, Bizona, and many others, have been engulfed by earthquakes.

“The more one does and sees and feels, the more one is able to do, and the more genuine may be one's appreciation of fundamental things like home, and love, and understanding companionship.”

Amelia Earhart (1897–1937) American aviation pioneer and author

As quoted in Soaring Wings : A Biography of Amelia Earhart (1939) by George Palmer Putnam, p. 83
Cited as Amelia Earhart, "My Husband," Redbook magazine (Sept. 1933) in Mary S. Lovell, The Sound of Wings (1989), p. 101.

“This is an age in which one cannot find common sense without a search warrant.”

George Will (1941) American newspaper columnist, journalist, and author

Column, May 9, 1996, "FDR's memorial hides character" http://articles.baltimoresun.com/1996-05-09/news/1996130096_1_memorial-felix-frankfurter-cigarette-holder at baltimoresun.com
1990s

“Another way of emphasizing this diversity is to argue that if one cannot forecast (predict), one does not have a theory, and that forecasting is the weakest link in the chain of the management sciences at present. Indeed, if one cannot predict one cannot measure, and if one cannot measure, then there is no "theory."
This argument will seem entirely too strong to some. We do "forecast" in terms of probability distributions, and we do make measurements in terms of "costs." Of course, the management scientist has done all sorts of things with the concept of cost which few cost accountants would condone. But in the laboratory and outside it in industrial studies, one sees the emergence of a cost concept which eventually should revolutionize the measurements in managerial policy-making.
Theory and fact are just two sides of the same coin, but the two sides of a coin are different, and this difference will continue to characterize the development of management science.”

C. West Churchman (1913–2004) American philosopher and systems scientist

quote in: Fremont A. Shull (ed.), Selected readings in management https://archive.org/stream/selectedreadings00shul#page/n13/mode/2up, , 1957. p. 8
1940s - 1950s, "Management Science — Fact or Theory?" 1956