Never forget that you are one of a kind. Never forget that if there weren't any need for you in all your uniqueness to be on this earth, you wouldn't be here in the first place. And never forget, no matter how overwhelming life's challenges and problems seem to be, that one person can make a difference in the world. In fact, it is always because of one person that all the changes that matter in the world come about. So be that one person.

We as economic society are going to have to pay our whole population to go to school and pay it to stay at school.

Humans beings always do the most intelligent thing…after they’ve tried every stupid alternative and none of them have worked

Everything you've learned in school as "obvious" becomes less and less obvious as you begin to study the universe.

I do not look upon human beings as good or bad.

Our little Spaceship Earth is only eight thousand miles in diameter, which is almost a negligible dimension in the great vastness of space.

We are operating at an overall mechanical efficiency of only four percent... Therefore, we find that if we increase the overall mechanical efficiency to only twelve percent we can take care of everybody. That three-fold increase in the overall efficiency can only be accomplished by redesign.