sentences:  After finishing secondary school, he worked in a bank for a year that include the German hyperinflation of 1923.He then studied at the Berlin Handelshochschule and obtained a Ph.D. from the University of Berlin in 1928.From then until he left for the USA in 1934, he was employed by the German statistical office and the Institut fur Finanzwesen, working on studies of the banking and economic systems of Latin America and elsewhere.