The U.N. had such lofty goals to eliminate poverty and stop war and cure diseases and help refugees - things that no one country could do.

I don't measure success in numbers, but I consider my contributions of more than $1.3 billion to various causes over the years to be one of my proudest accomplishments and the best investment I've ever made. Those dollars have improved lives, saved species, fought disease, educated children, inspired change, challenged ideas and opened minds; at the time of my death, virtually all of my wealth will have gone to charity.

The sad thing about destroying the environment is that we're going to take the rest of life with us. The bluebirds will be gone, and the elephants will be gone, and the tigers will be gone, and the pandas will be gone.

I'm no genius. I'm not at all; I just happen to look five or 10 years ahead and think things through.

I regret that I wasn't more successful with my marriages, but it is what it is.

To succeed you have to be innovative.

If the perpetrators of the World Trade Center plane crashes had a nuclear weapon, there's no doubt in my mind but that they would've detonated it in New York.