In February 1949, Erdos slipped out of Hungary. For the next three years he went back and forth between England and the United States before landing a flexible deal at the University of Notre Dame in 1952. He had to teach only one class and was assigned an assistant who could take over ton the spur of the moment should he have the rge to rush off and finish a proof with a collaborator. Although Erdos rejected organized religion, he didn't mind teaching at a Catholic school. "The only thing that bothered me," he joked, "was that there were too many plus signs." (i.e. the crucifix.)
