They were the most famous men in America. They came from separate countries, followed different philosophies, and led dissimilar lives. But they were fast friends. No two people did more to shape America in the mid-1700s.

Benjamin Franklin was the American prototype: hard-working, inventive, practical, funny, with humble manners and lofty dreams. George Whitefield was the most popular preacher in an era of great piety, whose outdoor preaching across the colonies was heard by thousands, all of whom were told, “You must be born again.” People became excited about God. They began reading the Bible and supporting charities. When Whitefield died in 1770, on a preaching tour in New Hampshire, he had built a spiritual foundation for a new nation—just as his surviving friend, Ben Franklin, had built its social foundation. Together these two men helped establish a new nation founded on liberty. This is the story of their amazing friendship.