Everything you've learned in school as 'obvious' becomes less and less obvious as you begin to study the universe. For example, there are no solids in the universe. There's not even a suggestion of a solid. There are no absolute continuums. There are no surfaces. There are no straight lines.

Humanity is acquiring all the right technology for all the wrong reasons.

Either war is obsolete or men are.

I am the only guinea pig I have.

A self-balancing, 28-jointed adaptor-based biped; an electro-chemical reduction plant, integral with segregated stowages of special energy extracts in storage batteries, for subsequent actuation of thousands of hydraulic and pneumatic pumps, with motors attached; 62,000 miles of capillaries....

I think I am a verb.

Sometimes I think we're alone. Sometimes I think we're not. In either case, the thought is staggering.

Now there is one outstandingly important fact regarding Spaceship Earth, and that is that no instruction book came with it.

Racism, pollution and the rest of it are themselves very close to extinction.

When I'm working on a problem, I never think about beauty. I think only how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong.

Nature is trying very hard to make us succeed, but nature does not depend on us. We are not the only experiment.

Of course, our failures are a consequence of many factors, but possibly one of the most important is the fact that society operates on the theory that specialization is the key to success, not realizing that specialization precludes comprehensive thinking.