Bill Gates

The Internet is becoming the town square for the global village of tomorrow.

Today, we're very dependent on cheap energy. We just take it for granted - all the things you have in the house, the way industry works.

Steve Jobs' ability to focus in on a few things that count, get people who get user interface right, and market things as revolutionary are amazing things.

The nuclear approach I'm involved in is called a traveling-wave reactor, which uses waste uranium for fuel. There's a lot of things that have to go right for that dream to come true - many decades of building demo plants, proving the economics are right. But if it does, you could have cheaper energy with no CO2 emissions.

Investing for the poor requires participation from the entire community.

This social-networking thing takes you to crazy places.

Expectations are a form of first-class truth: If people believe it, it's true.

I have an excellent memory, a most excellent memory.

OK, I have a nickname. My family calls me 'Trey' because I'm William the third. My dad has the same name, which is always confusing because my dad is well known, and I'm also known.

The only definition by which America's best days are behind it is on a purely relative basis.

Nobody believes in completely unadulterated capitalism.

The belief that the world is getting worse, that we can't solve extreme poverty and disease, isn't just mistaken. It is harmful.