Kenneth E. Boulding (1910–1993) British-American economist
Source: 1970s, Economics As a Science, 1970, p. 97
Source: 1850s, An Investigation of the Laws of Thought (1854), p. 12; Cited in: Alexander Bain (1870) Logic, p. 191
Kenneth E. Boulding (1910–1993) British-American economist
Source: 1970s, Economics As a Science, 1970, p. 97
Joseph B. Soloveitchik (1903–1993) American theologian
Source: Halakhic Man (1983), p. 83
Joseph Louis Lagrange (1736–1813) Italian mathematician and mathematical physicist
Dans Les Leçons Élémentaires sur les Mathématiques (1795) Leçon cinquiéme, Tr. McCormack, cited in Moritz, Memorabilia mathematica or, The philomath's quotation-book (1914) Ch. 15 Arithmetic, p. 261. https://archive.org/stream/memorabiliamathe00moriiala#page/260/mode/2up
Richard Courant (1888–1972) German American mathematician (1888-1972)
Richard Courant, "Mathematics in the Modern World", Scientific American, Vol 211, (Sep 1964), p. 42
Leonhard Euler (1707–1783) Swiss mathematician
§4
Introduction to the Analysis of the Infinite (1748)
“Number is different from quantity.”
Gregory Bateson (1904–1980) English anthropologist, social scientist, linguist, visual anthropologist, semiotician and cyberneticist
Source: Mind and Nature, a necessary unity, 1988, p. 118
James Joseph Sylvester (1814–1897) English mathematician
James Joseph Sylvester, Collected Mathematical Papers, Vol. 1 (1904), p. 91.
“The essence of mathematics lies entirely in its freedom.”
Georg Cantor (1845–1918) mathematician, inventor of set theory
Variant translation: The essence of mathematics is in its freedom.
From Kant to Hilbert (1996)
William Stanley Jevons (1835–1882) English economist and logician
The Substitution of Similars, The True Principles of Reasoning (1869)
Context: Aristotle's dictim... may then be formulated somewhat as follows:—Whatever is known of a term may be stated of its equal or equivalent. Or, in other words, Whatever is true of a thing is true of its like.... the value of the formula must be judged by its results;... it not only brings into harmony all the branches of logical doctrine, but... unites them in close analogy to the corresponding parts of mathematical method. All acts of mathematical reasoning may... be considered but as applications of a corresponding axiom of quantity...
“The second Definition. Number is that which expresseth the quantitie of each thing.”
Simon Stevin (1548–1620) Flemish scientist, mathematician and military engineer
Disme: the Art of Tenths, Or, Decimall Arithmetike (1608)