




Stephen Cole Kleene was born on January 5, 1909 in Hartford, Connecticut. He received his Ph.D. from Princeton University in 1934. He taught at the University of Wisconsin, Madison from 1935 until 1979. Kleene worked in mathematical logic, particularly in recursion theory...
Walter Pitts was born in Detroit on April 23, 1923. Pitts apparently ran away from home at the age of 15. Instead of joining the circus, he went to the University of Chicago, where he sat in on Bertrand Russell's lectures, and gave Rudolph Carnap a copy of Carnap's "Aufbau" with corrections and suggestions for improvements on office hour. Pitts never received a degree, despite the best efforts of Carnap and others, but he found a home in the house of Warren McCulloch.





Warren McCulloch was born on November 16, 1898, in Orange, N.J.. McCulloch was educated primarily at Yale, were he received a B.A. in philosophy and psychology (1921) and a masters in psychology (1923). He also received an M.D. from New York's College of Physicians and Surgeons in 1927. His first major academic appointment was at Yale, where he was first a Sterling Fellow, an instructor, and finally and assistant professor. (1935-1941)...