Flexner and Veblen set out to recruit the best mathematicians and physicists they could find. The rise of fascism and the associated anti-semitism forced many prominent mathematicians to flee Europe and some, such as Einstein and Hermann Weyl (whose wife was Jewish), found a home at the new institute. Weyl as a condition of accepting insisted that the Institute also appoint the thirty-year-old Austrian-Hungarian polymath John von Neumann. Indeed, the IAS became the key lifeline for scholars fleeing Europe. Einstein was Flexner's first coup and shortly after that he was followed by Veblen's brilliant student James Alexander and the wunderkind of logic Kurt Gödel. Flexner was fortunate in the luminaries he directly recruited but also in the people that they brought along with them. Thus, by 1934 the fledgeling institute was led by six of the most prominent mathematicians in the world. In 1935 quantum physics pioneer Wolfgang Pauli became a faculty member. With the opening of the Institute for Advanced Study, Princeton replaced Göttingen as the leading center for mathematics in the twentieth century.