When polio paralyzed Franklin Roosevelt at the age of thirty-nine, people wept to think that the young man of golden promise must live out his days as a helpless invalid. He never again walked on his own. But in just over a decade, he regained his strength and seized the presidency.This was the most remarkable comeback in the history of American politics. And, as author James Tobin shows, it was the pivot of Roosevelt's life-the triumphant struggle that tempered and revealed his true character. With enormous ambition, canny resourcefulness, and sheer grit, FDR willed himself back into contention and turned personal disaster to his political advantage. Tobin's dramatic account of Roosevelt's ordeal and victory offers central insights into the forging of one of our greatest presidents.