There's a fascinating statistic: One out of every four people in America has visited New York since 9/11. It is astounding. Now, I don't know how you count it; it's some people coming multiple times.

Nobody should ever mistake and think that our country [USA] is weakened, or that authority is diffuse and unspecified, and that we are vulnerable.

Don't be afraid to assert yourself, have confidence in your abilities and don't let the bastards get you down.

We haven't had a world war in a long time. We do have mass movements of people out of Syria and North Africa. But, fundamentally, if you take Japan, you're complaining that the economy isn't booming, they'd like to have slightly higher inflation.

Is your company so small you have to do everything for yourself? Wait until you're so big that you can't. That's worse.

I think that most of the candidates [for presidency] can't run the railroad, and I still worry that whoever gets elected will have policies designed for political rather than practical reasons.

Cities with clean air gain an economic advantage, because where people want to live and work, businesses want to invest.