evidence: His advice: "Follow your passion. Start small, be very conservative in your expectations, think long term and be prepared to work a lot of hours." [...] Left: Vice President Walter Mondale and President Jimmy Carter, whose administration was from 1977 to 1981. Right: Vice President Nelson Rockefeller and President Gerald Ford, who served from 1974 to 1977. (State Dept./B. Insley) [...] (Graphic: State Dept./Frank Carter)