A second generation
American, he was born in
Chicago and most associated with that city. He received his
Bachelor of Science in 1926,
Masters in 1927, and
PhD in 1928, at the age of 22. All degrees were obtained from the
University of Chicago. He married around the same time as his graduation. He spent his postdoctoral year at
Princeton University and then from 1929 to 1931 he was an instructor at
Columbia University. During this period he worked on
Abelian varieties and their endomorphism algebras. He returned to Princeton for the opening year of the
Institute for Advanced Study in 1933-34 and spent another year in Princeton in 1961-62 as the first Director of the Communications Research Division of IDA (the Institute for Defense Analyses).