Sub-titled The Great Collaboration this is sure to have an audience in the experienced and expert student of American political theory. It is exciting research in manuscript collections and unpublished primary sources for the interdependent relationship of the generally accepted father of Jeffersonian politics and his lesser known friend for half a century, James Madison. This traces their early acquaintance begun in 1776 to the deepening of their interest, beliefs and cooperation through to their deaths, and gives a well documented account of the issues in which they were involved, the mutual influence, and the crucial roles they played. It points out the interplay of their ideas, their importance in the age of American enlightenment, their part is formulating principles of democracy and in realising those ideals; it never loses sight of their unique and congenial partnership not only as friends but as political philosophers and statesmen; it shows how they affirmed their faith in and their progressive view of American potentials; it underlines the characteristic differences as well as the basic agreement about political values. And it gives more credit to Madison than history has so far accorded, in the part he played in the Virginia and Kentucky resolutions, in the founding of the University of Virginia and the Jeffersonian tradition. From letters and accredited source material, this offers new horizons to historians everywhere.