I see what keeps people young: work!

I love this planet I want to see the environment preserved and I want to see the human race preserved. And I'd like to see everybody living decently in a more equitable, kind-hearted, thoughtful, generous world.

Christians are losers.

Be sure to set your goals so high that you can't possibly accomplish them in one lifetime. That way you'll always have something ahead of you. I made the mistake of setting my goals too low, and now I'm having a hard time coming up with new ones.

There is no greater legacy that we can leave our children and grandchildren than a peaceful and safer world.

Once you decide to do something, and you're pretty sure you're right, then you gotta go ahead and do it. Because if you piddle around, somebody else will beat you to it.

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.