On Carnap as an Esperantist & cosmopolitan (vs Heidegger)
This was the original “linguistic turn.” Recent biographies have strongly humanized Rudolf Carnap away from the image of a stern logician and into a true man of enlightenment and a utopian of international cooperation. Carnap favored the construction of “ideal languages” both in logic and in reality, artificial languages that could overcome the errors and historical demerits of natural language, not from any disapproval of human history but because he maintained the cosmopolitan Enlightenment ethos of Kant’s “Perpetual Peace,” as in his love of Esperanto. Friedman has pointed out the touching rhapsody in Carnap’s intellectual autobiography when he recounts teaching himself the language at the age of fourteen and attending a performance of Goethe’s noble Iphigenia performed in the rationalized international language. “It was a stirring and uplifting experience for me to hear this drama, inspired by the ideal of one humanity, expressed in the new medium which made it possible for thousands of spectators from many countries to understand it.” After the tragedy of World War I, young man Carnap hiked through Finland, Estonia, Latvia, and Lithuania with a Bulgarian friend: “We stayed with hospitable Esperantists and made contact with many people in these countries. We talked about all kinds of problems in public and in personal life, always, of course, in Esperanto.”
SOURCE: Greif, Mark. The Age of the Crisis of Man: Thought and Fiction in America, 1933–1973 (Princeton University Press, 2015), chapter 10--Universal Philosophy and Antihumanist Theory, pp. 288-289.
