Nur im Zusammenhange eines Satzes bedeuten die Wörter etwas. Es wird also darauf ankommen, den Sinn eines Satzes zu erklären, in dem ein Zahlwort vorkommt.
Gottlob Frege (1950 [1884]). p. 73
“For want of the apparatus of propositional functions, many logicians have been driven to the conclusion that there are unreal objects. It is argued, e. g., by Meinong, that we can speak about "the golden mountain," "the round square," and so on; we can make true propositions of which these are the subjects; hence they must have some kind of logical being, since otherwise the propositions in which they occur would be meaningless. In such theories, it seems to me, there is a failure of that feeling for reality which ought to be preserved even in the most abstract studies. Logic, I should maintain, must no more admit a unicorn than zoology can; for logic is concerned with the real world just as truly as zoology, though with its more abstract and general features.”
Source: 1910s, Introduction to Mathematical Philosophy (1919), Ch. 16: Descriptions
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Bertrand Russell 562
logician, one of the first analytic philosophers and politi… 1872–1970Related quotes
The Foundations of Mathematics (1925)
Source: 1910s, Introduction to Mathematical Philosophy (1919), Ch. 16: Descriptions
Anatol Rapoport. " Various meanings of “theory”." http://www.acsu.buffalo.edu/~fczagare/PSC%20504/Rapoport%20(1958).pdf American Political Science Review 52.04 (1958): 972-988.
1950s
The Foundations of Mathematics (1925)
Third Lecture, Critical Discussion of the Foundations of Probability, p. 80
Probability, Statistics And Truth - Second Revised English Edition - (1957)