Pulitzer Prize-winning biographer Jon Meacham on the evolution of Abraham Lincoln's moral principles and political leadership -- and what the era of Lincoln can teach us about the state of our democracy today.
After he left the White House at age 50, President Theodore Roosevelt struggled to recover power and find a sense of purpose. Diane talks with the author of a new book focusing on the last decade of his life.
- Patricia O'Toole Author of "Money and Morals in America" and "The Five of Hearts: An intimate Portrait of Henry Adams and His Friends."
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