When I began work on my first book, 'The River of Doubt,' which tells the story of Theodore Roosevelt's 1914 descent of an unmapped river in the Amazon rainforest, I thought of it as a tale of adventure, exploration and extraordinary courage.

If uncovering the truth is the greatest challenge of nonfiction writing, it is also the greatest reward.

I have always been interested in the idea of self-reinvention.

With the Lincoln assassination, the South didn't feel it could mourn along with the North. But Garfield was beloved by all the American people. He was trusted and respected by North and South, by freed slaves and former slave owners. Also by pioneers, which his parents had been, and by immigrants.

We need to have Turkey respect democracy, human rights, and fundamental freedoms.

Our people are willing to work with the government on new technologies. Now, it's a habit; every Estonian looks at it as part of our national identity. We understand that this allows us to provide better services to our people than our money would allow.

Democracy isn't just for people in the Middle East, but Britons, too.

The fossil fuel industry has been a particular disgrace, polluting our politics as well as our planet.