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Von Neumann too wondered about the mystery of his and his compatriots’ origins. His friend and biographer, the Polish mathematician Stanislaw Ulam, remembers their discussions of the primitive rural foothills on both sides of the Carpathians, encompassing parts of Hungary, Czechoslovakia and Poland, populated thickly with impoverished Orthodox villages. “Johnny used to say that all the famous Jewish scientists, artists and writers who emigrated from Hungary around the time of the first World War came, either directly or indirectly, from those little Carpathian communities, moving up to Budapest as their material conditions improved.
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