“All traditional logic habitually assumes that precise symbols are being employed. It is therefore not applicable to this terrestial life but only to an imagined celestial existence… logic takes us nearer to heaven than other studies.”
'Vagueness' http://www.personal.kent.edu/~rmuhamma/Philosophy/RBwritings/vagueness.htm, first published in The Australasian Journal of Psychology and Philosophy, 1 June, 1923 <br class="br">1920s
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Bertrand Russell562
logician, one of the first analytic philosophers and politi… 1872–1970Related quotes
“The false logic involved is: “We exist; therefore something—call it X—created us.””
Arthur C. Clarke book Crusade
Once this assumption is made, the properties of the hypothetical X can be fantasied in an unlimited number of ways.
But the entire process is obviously fallacious; for by the same logic something must have created X—and so on. We are immediately involved in an infinite regress, which can have no meaning in the real universe.
Crusade, p. 878
2000s and posthumous publications, The Collected Stories of Arthur C. Clarke (2001)
Alfred Tarski (1901–1983) Polish-American logician
Introduction to Logic: and to the Methodology of Deductive Sciences. (1941/2013) Tr. Olaf Helmer, pp. 108-110.
Paul Gauguin (1848–1903) French Post-Impressionist artist
Source: 1890s - 1910s, The Writings of a Savage (1996), p. 145
Arthur Conan Doyle book The Adventure of the Copper Beeches
Source: The Adventure of the Copper Beeches
George Frederick James Temple (1901–1992) British mathematician
100 Years of Mathematics: a Personal Viewpoint (1981)
Averroes (1126–1198) Medieval Arab scholar and philosopher
The Decisive Treatise
Source: Jon McGinnis, David C. Reisman (2007) Classical Arabic Philosophy: An Anthology of Sources. p. 310
Rudolf Carnap (1891–1970) German philosopher
Foreword
Logical Syntax of Language, 1934/1937
“The fact that all Mathematics is Symbolic Logic is one of the greatest discoveries of our age”
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
Principles of Mathematics (1903), Ch. I: Definition of Pure Mathematics, p. 5
1900s
Context: The fact that all Mathematics is Symbolic Logic is one of the greatest discoveries of our age; and when this fact has been established, the remainder of the principles of mathematics consists in the analysis of Symbolic Logic itself.