evidence: A post shared on Facebook claims that founding father Thomas Jefferson once stated, "Eternal vigilance is the price of liberty." The Thomas Jefferson Foundation, which runs his Monticello estate, includes the saying on its list of spurious quotations. John Philpot Curran, an Irish politician, may actually have originated the saying. Jefferson made many highly quotable statements, but the saying attributed to him the Facebook post doesn’t appear to be one of them. It appears nowhere in his written works. (RELATED: Did Thomas Jefferson Say, ‘Most Bad Government Has Grown Out Of Too Much Government’?)