This examines the significance of friendship in Abraham Lincoln's life and the role it played in his presidency. Though Lincoln had hundreds of acquaintances and dozens of admirers, he had almost no intimate friends. Behind his mask of affability and endless stream of humorous anecdotes, he maintained an inviolate reserve that only a few were ever able to penetrate. In this highly original book, two-time Pulitzer Prize-winner David Herbert Donald examines, for the first time, these close friendships and explores their role in shaping Lincoln's career.