If history is any indication, all truths will eventually turn out to be false.

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

I don't want to think about how many people have thought or still think that I'm crazy.

More than ever, the world needs good engineers. However, the pool of talent is shrinking not growing.

An innovation is one of those things that society looks at and says, if we make this part of the way we live and work, it will change the way we live and work.

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

As we move towards 8 or 10 billion people on the planet, there's a little less gold per capita. Each one of us will continue to be fighting over an ever smaller percentage of total resources. This is not a happy thought