McGeorge Bundy Quotes
We can't assume what we don't believe.
Bundy was discussing various Vietnam scenarios with a former White House aide who challenged several assumptions and asked Bundy what would happen if the North Vietnamese would escalate their ground war in the South in retaliation for U. S. bombing. Bundy sated that he didn't believe that would happen, but Hughes asked him to assume it would and discuss the consequence.
McGeorge Bundy, 1919-1996, Presidential Assistant for National Security (Democrat), Remark to Emmett John Hughes
Sourced by: Eigen's Political and Historical Quotations
McGeorge "Mac" Bundy was an American academic who served as United States National Security Advisor to Presidents John F. Kennedy and Lyndon B. Johnson from 1961 through 1966. He was president of the Ford Foundation from 1966 through 1979. Despite his career as a foreign-policy intellectual, educator, and philanthropist, he is best remembered as one of the chief architects of the United States' escalation of the Vietnam War during the Kennedy and Johnson administrations.