Look at electricity in human history - it took a few decades for electricity to really revolutionize the American economy. And the Internet will be the same. At some point in the future, we will arrive at a new era of low-hanging fruit.

When you look at the actual data on technological innovation, one thing you see is that what I call the 'low-hanging fruit' has been exhausted. So radio, flush toilets, electricity, and automobiles - a lot of very basic inventions - have spread to almost all households.

The iPhone is made on a global scale, and it blends computers, the Internet, communications, and artificial intelligence in one blockbuster, game-changing innovation. It reflects so many of the things that our contemporary world is good at - indeed, great at.

Most restaurants in most cities, including Washington, are at a sort of mid-level. They're somewhat trendy, or they have some sort of gimmick, or they're somewhat expensive. And they make a lot of money off drinks. I tell people don't go to most of them, unless your goal is just to socialize.

I love the Internet. I love my mobile devices. I love the fact that they mean that whoever chooses to will be able to watch this talk far beyond this auditorium.

We're a depraved civilization. All this technology, all the computer games and the iPhones... nobody will sit for art anymore. What a dismaying state of humanity.

This is the real tragedy of America's 'Internet freedom agenda': It's going to be the dissidents in China and Iran who will pay for the hypocrisy that drove it from the very beginning.

Retail banking in Africa is very weak. You can't go to a village and get money from an ATM or visit a branch of the bank. So people have to use the Internet.