This is the correspondence, mainly from Aron to Polya, while he was in Kishinev waiting to leave, and she was in Paris. Letters from friends continue after Polya has arrived in the U.S. in 1914. The letters and postcards date from 1906 to 1920.
Yes, Polya, what is happening behind the walls of our houses and cities is indescribable. The blood becomes cold in my veins. The words have no power and no color to describe and to draw that horror in the world. Please God, fogive this sinful earth.