Johnny von Neumann, having completed his Rockefeller Foundation scholarship, obtained a job at the University of Berlin. The job did not provide him with a direct salary, but only the opportunity to give paid lectures and conferences. But it did provide him access to Berlin’s intellectual life. He then moved (this time on a salary) to Hamburg in 1929. He published a masterpiece of mathematical physics: “Mathematical Foundations of Quantum Mechanics” in 1932.
