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.
The man behind one of the most innovative and successful investment companies in history – the Vanguard Group – talks to Diane about the financial crisis gripping the nation and the importance of knowing when enough is enough.
- John Bogle Founder of the Vanguard Mutual Fund Group and is President of the Bogle Financial Markets Research Center.
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