thomas jefferson believed that a country's constitution should be rewritten every 19 years. Instead, the U.S. Constitution, which Jefferson did not help to write (he was in Paris serving as U.S. minister to France when the Constitutional Convention was held in Philadelphia), has prevailed since 1789.
"Jefferson thought the dead should not rule the living, thus constitutions should expire frequently, but the fact is that the U.S. Constitution quickly became enshrined by the public and is the oldest constitution in the world," said Zachary Elkins, a professor of political science at Illinois.
Many other constitutions do not last very long, according to Elkins, who is working with Tom Ginsburg, an Illinois professor of law, on a project to collect and analyze some 760 constitutions used worldwide since the U.S. Constitution took effect.
