John L. Hennessy (NAE/NAS) is the James F. and Mary Lynn Gibbons Professor of Computer Science and Electrical Engineering in the Stanford School of Engineering, and the Shriram Family Director of Stanford’s Knight-Hennessy Scholars, the largest fully endowed graduate-level scholarship program in the world. He is also chair of Alphabet and a trustee of the Gordon and Betty Moore Foundation. He was the tenth president of Stanford (2000–16), cofounded MIPS Computer Systems (1984) and Atheros Communications (1998), and coauthored (with David A. Patterson) two internationally used textbooks in computer architecture. His honors include the 2012 Medal of Honor of the Institute of Electrical and Electronics Engineers and, jointly with David Patterson, both the 2017 ACM A.M. Turing Award and the 2020 BBVA Foundation Frontiers of Knowledge Award. Dr. Hennessy earned his bachelor’s degree in electrical engineering from Villanova University and his master’s and doctoral degrees in computer science from Stony Brook University.