As a defender of the liberties of Republican Venice and proponent of the separation of Church and state, Sarpi attained fame as a hero of republicanism and free thought and possible crypto Protestant. His last words, "Esto perpetua" ("may she the republic live forever"), were recalled by John Adams in 1820 in a letter to Thomas Jefferson, when Adams "wished 'as devoutly as Father Paul for the preservation of our vast American empire and our free institutions', as Sarpi had wished for the preservation of Venice and its institutions."