Better to have your enemies inside your tent pissing out, then to have them outside your tent pissing in.

When I do research, I have done - 90 percent of my time is the research, the other ten percent is the writing. So I don't have to face a blank piece of paper. I can look at this as a quote that I have from somewhere.

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)

If you interview five people about the same incident, and you see five different points of view, it makes you know what makes history so complicated. Something doesn't just occur. It's not like a scientific event. It's a human event. So the dimensions of it will be seen differently by different people.

(from John Hay's diary) “The President never appeared to better advantage in the world,” Hay proudly noted in his diary. “Though He knows how immense is the danger to himself from the unreasoning anger of that committee, he never cringed to them for an instant. He stood where he thought he was right and crushed them with his candid logic.

If your ambition comes at the price of an unbalanced life, that there's nothing else that gives you comfort but success, it's not worth it.

Good leadership requires you to surround yourself with people of diverse perspectives who can disagree with you without fear of retaliation.