"On the personal level, Harold Chestnut is remembered as a quiet but persistent man. Once he determined something ought to be done, he worked until he found a way to make it happen. He viewed life as one large control system that needed to be nudged from time to time to keep it running smoothly and on course. He was a devoted family man who enjoyed hiking and sailing with his family, especially at their cottage on Schroon Lake in the Adirondacks. Harold Chestnut will be long remembered for his technical contributions to the field of systems and control, for his leadership in getting people from divers backgrounds to work together, and for setting up institutions that foster ongoing cooperation for the solution of engineering and societal problems."