Towards the end of 1933, he learned of the Kleene–Rosser paradox from correspondence with John Rosser. The focus of Curry's work were attempts to show that combinatory logic could provide a foundation for mathematics. Haskell Curry died on Septemin State College, Pennsylvania. In 1970, after finishing the second volume of his treatise on the combinatory logic, Curry retired from the University of Amsterdam and returned to State College, Pennsylvania. After retiring from Penn State in 1966, Curry accepted a position at the University of Amsterdam. Under a Fulbright fellowship, he collaborated with Robert Feys in Louvain, Belgium. Immediately after the war he worked on the ENIAC project, in 19. In 1942 he took a leave of absence to do applied mathematics for the United States government during World War II, notably at the Frankford Arsenal. He spent one year at University of Chicago in 1931–1932 under a National Research Fellowship and one year in 1938–1939 at the Institute for Advanced Study in Princeton. Curry remained at Penn State for the next 37 years.

They had two children, Anne Wright Curry (July 27, 1930) and Robert Wheatley Curry (July 6, 1934). The couple lived in Germany while Curry completed his dissertation, then, in 1929, moved to State College, Pennsylvania where Curry accepted a position at Pennsylvania State College. In 1928, before leaving for Göttingen, Curry married Mary Virginia Wheatley. in 1930 with a dissertation on combinatory logic. Curry was supervised by David Hilbert and worked closely with Bernays, receiving a Ph.D. Schönfinkel's work had anticipated much of Curry's own research, and as a consequence, he moved to University of Göttingen where he could work with Heinrich Behmann and Paul Bernays, who were familiar with Schönfinkel's work. In 1927, while an instructor at Princeton University, he discovered the work of Moses Schönfinkel in combinatory logic. While he was directed by George David Birkhoff to work on differential equations, his interests continued to shift to logic. Remaining at Harvard, Curry pursued a Ph.D. Curry's interest in mathematical logic started during this period when he was introduced to the Principia Mathematica, the attempt by Alfred North Whitehead and Bertrand Russell to ground mathematics in symbolic logic. After two years of graduate work in electrical engineering at MIT, he returned to Harvard to study physics, earning an MA in 1924. He entered Harvard University in 1916 to study medicine but switched to mathematics before graduating in 1920. Curry was born on September 12, 1900, in Millis, Massachusetts, to Samuel Silas Curry and Anna Baright Curry, who ran a school for elocution.

Haskell curry