Thomas Jefferson (1743-1826) was the third President of the United States (1801-09), the principal author of the Declaration of Independence (1776), and one of the most influential Founding Fathers for his promotion of the ideals of Republicanism in the United States. "The opinion universally entertained of the extraordinary abilities of Thomas Jefferson, and the signal evidence given by his country, of a profound sense of his patriotic services, and of veneration for his memory, have induced the Editor, who is both his Executor and the Legatee of his Manuscript Papers, to believe that an extensive publication from them would be particularly acceptable to the American people."