I am a historian. With the exception of being a wife and mother, it is who I am. And there is nothing I take more seriously.

Washington was a typical American. Napoleon was a typical Frenchman, but Lincoln was a humanitarian as broad as the world. He was bigger than his country - bigger than all the Presidents together. We are still too near to his greatness,' (Leo) Tolstoy (in 1908) concluded, 'but after a few centuries more our posterity will find him considerably bigger than we do. His genius is still too strong and powerful for the common understanding, just as the sun is too hot when its light beams directly on us.' (748)

When I look at Franklin Roosevelt's leadership, I think the most important quality he had during the Depression and the war was this absolute confidence in himself, in his country, really in the American people. He was able to exude that confidence and almost project it.

Whatever it is that you do, if you have that passion and desire for it, that's the most important thing.

Lincoln had internalized the pain of those around him-the wounded soldiers, the captured prisoners, the defeated Southerners. Little wonder that he was overwhelmed at times by a profound sadness that even his own resilient temperament could not dispel.

I think the most important thing I wanted to say at various times to Franklin and Eleanor Roosevelt was that it seemed so sad to me that - I really believe they loved each other and had a great deal of affection - but because of that early hurt in their marriage, there was a certain kind of distance from then on, until their deaths actually. So at times, I just wanted to push them together and say, "Come on, you guys! I know you love each other. This is crazy!"

There are 20,000 million books I could have to read, but I can pick the ones and know that I'm learning something that I didn't know before. That's the glory of writing. It's not even so much the writing, it's what you learn - especially history - because so much of it is research.