Alexander Hamilton, the worldly New Yorker; John Adams, the curmudgeonly Yankee; Thomas Jefferson, the visionary Virginia squire--each steered their public lives under the guideposts and constraints of Enlightenment principles, and for each their relationship to the politics of Enlightenment was transformed by the struggle for American independence. Repeated humiliation on America's battlefields banished Hamilton's youthful idealism, leaving him a...