Lawrence R. Klein — American Economist born on September 14, 1920,

Lawrence Robert Klein was an American economist. For his work in creating computer models to forecast economic trends in the field of econometrics in the Department of Economics at the University of Pennsylvania, he was awarded the Nobel Memorial Prize in Economic Sciences in 1980 specifically "for the creation of econometric models and their application to the analysis of economic fluctuations and economic policies." Due to his efforts, such models have become widespread among economists. Harvard University professor Martin Feldstein told the Wall Street Journal that Klein "was the first to create the statistical models that embodied Keynesian economics," tools still used by the Federal Reserve Bank and other central banks... (wikipedia)

Although I was not aware of it at the time, the experience of growing up during the Great Depression was to have a profound impact on my intellectual and professional career.
An early fascination with higher mathematics at the university level blossomed into speculative thinking that could provide a basis for dealing with economic issues.
I, Lawrence Klein, was born in Omaha, Nebraska, as were my elder brother and younger sister.
The funds from the sale were put into research and general teaching budgets at the university. Wharton Econometric Forecasting Associates, Inc., is now a growing enterprise with many model and other econometric facilities.
The completion of my undergraduate training at the University of California (Berkeley) provided just the needed touches of rigor at advanced levels in both economics and mathematics.