You can be enormously effective for a period of time, because it's almost like there's an engine in you that needs to keep going, and you have a greater drive than other people - who may be more happy and balanced in life - because you have to keep going out and proving yourself over and over again.

What I think I've learned is that you're never going to get it all right, and you can't obsess about having a fact wrong or a date wrong or something like that, as long as you tried as best you could. If you've done the kind of research that you're sure is pretty good, then you just have to have confidence in it, so that nothing is perfect in life. I think that is what the criticism has helped me to understand.

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.

It took me five years on Lyndon Johnson, ten years on the Kennedys, six years on the Roosevelts. Inevitably, you get shaped by the people that you're thinking about during that period of time.

The past is not simply the past, but a prism through which the subject filters his own changing self-image.

I think, as a president, you have to want respect. You can't look for love from the American people. You have to just do what you think is right. Some people will hate you, but others, in the long run, will respect you for what you've done.

He (William Howard Taft) had little patience with the unconscious arrogance of conscious wealth and financial success.