A nation that forgets its past can function no better than an individual with amnesia.

I don't pick my presidents because they were great presidents. I'm not much interested in ranking presidents and who is the best and who is the worst. I am much more inclined to be interested in them if they had an interesting life and if they were a complete person - and by that I mean they also had flaws and failings.

There's an awful temptation to just keep on researching. There comes a point where you just have to stop, and start writing.

When a friend of Abigail and John Adams was killed at Bunker Hill, Abigail's response was to write a letter to her husband and include these words, "My bursting heart must find vent at my pen.

There are no people on earth in whom a spirit of enthusiastic zeal is so readily kindled, and burns so remarkably, as Americans

I feel that what I do is a calling. I would pay to do what I do if I had to. I will never live long enough to do the work I want to do: the books I would like to write, the ideas I would like to explore.

We are all what we are, in large degree, because of others who have helped, coached, taught, counseled, who set a standard by example, who've taken an interest in our interests, opened doors, opened our minds, helped us see, who gave encouragement when we needed it, who reprimanded or prodded when we needed it, and at critical moments, inspired.