You can never learn less; you can only learn more.

Controlled time is our true wealth.

We are not going to be able to operate our Spaceship Earth successfully nor for much longer unless we see it as a whole spaceship and our fate as common. It has to be everybody or nobody.

When I am working on a problem, I never think about beauty but when I have finished, if the solution is not beautiful, I know it is wrong.

War is the ultimate tool of politics.

You cannot change how someone thinks, but you can give them a tool to use which will lead them to think differently.

People should think things out fresh and not just accept conventional terms and the conventional way of doing things.