James Madison (1751-1836), the fourth president of the United States, was one of the principal founders of America's republican form of government.

James Madison lived all his life in the county of Orange, Va., on a 5,000-acre plantation that produced tobacco and grains and was worked by perhaps 100 slaves. Though Madison abhorred slavery and had no use for the aristocratic airs of Virginia society, he remained a Virginia planter, working within the traditional political system of family-based power and accepting the responsibility this entailed. Like his neighbors and friends Thomas Jefferson and James Monroe, Madison worked creatively if not always consistently to make republican government a reality amid a social system and a slave economy often deeply at odds with principles of self-government and individual fulfillment.

After learning the fundamentals at home, Madison went to preparatory school and then to the College of New Jersey at Princeton. The...