Universal: Media
logic
Images
Plato (center left) and Aristotle, detail from School of Athens, fresco...
Art Media—Print Collector/Hulton Fine Art Collection/Getty Images
German philosopher of mathematics, logic, and language Gottlob Frege.
Courtesy of the Universitatsbibliothek, Jena, Ger.
German-born American philosopher Rudolf Carnap, 1960.
Courtesy of the University of California, Los Angeles
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