John McCarthy was born on September 4, 1927 at Boston, Massachusetts. While at MIT, he made significant contributions to the field of computing, including creating the LISP programming system and organizing and directing the MIT Artificial Intelligence Project with Marvin Minsky. McCarthy also motivated Jack Dennis to develop a timesharing system for the PDP-1 and later Marvin Minsky and Fernando Corbato to pursue timesharing work under Project MAC.