In this biography the author draws upon archives in the United States, England, and France, as well as unpublished transcripts of Jefferson presidential papers to give readers a view of Jefferson the politician and the President, a great and complex human being forever engaged in the wars of his era. The father of the ideal of individual liberty, of the Louisiana Purchase, of the Lewis and Clark expedition, and of the settling of the West, Jefferson recognized that the genius of humanity, and the genius of the new nation, lay in the possibility of progress. Philosophers think; politicians maneuver. Jefferson's genius was that he was both and could do both, often simultaneously, catapulting him into becoming the most successful political leader of the early republic, and perhaps in all of American history.