Transparency and truth are the fuels that run sophisticated civilizations. Without them, the state grinds to a halt. Lack of trust — not barbarians on the frontier, global warming or cooling, or even epidemics — doomed civilizations of the past, from imperial Rome to the former Soviet Union.
The United States can withstand the untruth of a particular presidential administration if the permanent government itself is honest. Dwight Eisenhower lied about the downed U-2 spy plane inside the Soviet Union. Almost nothing Richard Nixon said about Watergate was true. Intelligence reports of vast stockpiles of WMD in Iraq proved as accurate as Bill Clinton’s assertion that he never had sexual relations with Monica Lewinsky.