I don't work on a project unless I believe that it will dramatically improve life for a bunch of people.

I do not want to waste any time. And if you are not working on important things, you are wasting time.

Tell me it's never been done. Because the only real laws in this world-the only things we really know-are the two postulates of relativity, the three laws of Newton, the four laws of thermodynamics, and Maxwell's equation-no, scratch that, the only things we really know are Maxwell's equations, the three laws of Newton, the two postulates of relativity, and the periodic table. That's all we know that's true. All the rest are man's laws

If you're going to fail, you might as well fail at the big ones.

Kids are intimidated by the way science and technology is presented. It's made, frankly, quite boring and it becomes part of a curriculum that chases particularly women and minorities away.

The word entrepreneur is associated with success and adventure. From my life, the only thing I can tell you that's consistently associated with entrepreneurship is failure, and the only thing consistently associated with invention is frustration. There is a long road between the idea and the reality.

Nothing that has value, real value, has no cost. Not freedom, not food, not shelter, not healthcare.