"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."

"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."

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

"Dare to be naive."

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

"There is no avoiding war; it can only be postponed to the advantages of others."

"Protest long enough that you are right, and you will be wrong. It is easier to admire hard work if you don't do it."

"Life is like a ten speed bicycle. Most of us have gears we never use."

"Today the real test of power is not capacity to make war but capacity to prevent it."

"You can judge the character of others by how they treat those who can do nothing to them or for them."

"Plato is boring."