Courant (Courant in Gottingen and New York: The Story of an Improbable Mathematician,)

On April 1, 1933, he was an internationally famous and influential German professor, the director of the first institute in the world devoted entirely to mathematics, a trusted adviser of the education ministry, a successful author and editor, a man surrounded by a mathematical family of gifted students. Eight days later, he was dismissed from his position by the Nazis. Through friends, he obtained a modest position in the United States at a university with no mathematical reputation whatsoever.