This week on “The Learning Curve," co-hosts Gerard Robinson and Cara Candal talk with David Hackett Fischer, University Professor and Earl Warren Professor of History Emeritus at Brandeis University, and the author of numerous books, including Paul Revere's Ride and the Pulitzer Prize-winning Washington's Crossing. As America prepares to celebrate the Fourth of July, they review key figures who helped secure independence from Great Britain, including Paul Revere, immortalized in Longfellow’s classic poem, and Founding Father George Washington, known among his contemporaries as the “indispensable man” of the revolutionary cause.