We must have systems of checks and balances to make sure that those people who are making critical decisions for our country are held accountable, and nowhere is that more important than in the area of national security.

It was stunning actually, because what you would hope for from our national leaders is some reflection, some understanding that the situation that we encountered in Iraq was not what we expected, that it was not what he said it would be.

As we have all said, we understand that electronic surveillance is a vital tool in the war on terror. We all want to know when Osama bin Laden is calling: when he is calling, who he is calling, and what he is saying.

Instead, we did take our eye off the ball. We decided, instead of finishing the job in Afghanistan, to go into Iraq. And today, unfortunately, if you look at the situation on the ground, it is a mess.

Every year, thousands of startups are founded - not only in technology, but increasingly also in health care, education, and energy.

The reason that Google was such a success is because they were the first ones to take advantage of the self-organizing properties of the web. It's in ecological sustainability. It's in the developmental power of entrepreneurship, the ethical power of democracy.

My grandfather and my uncle took me to the gym. I was kinda wild; they thought that boxing would teach me a lesson, but I don't think in their wildest dreams they could imagine the success I would have.

I am lucky, I don't have aches and pains. I do Pilates regularly, which is a series of stretching exercises, and I recommend it to anyone of my age because the temptation is not to exercise when you get older. Well, you should.