One of the things that I realized when I left office was that in the 1990's citizens across the world applied more power than they had ever had, as compared with the government, because of more people living under democracies than dictatorships for the first time, the power of the internet, which the young Chinese used to basically change China's policy on the SARS epidemic, and shut it down, and because of the rise in non-governmental organizations like my foundation.

A significant number of petroleum geologists believe that we will reach the global maximum of petroleum extraction within this decade or that we have already reached it. Peak Oil happened in 1970 in America, when over half of our oil that we gained from the soil was exhausted ... This is very disturbing, regardless of global warming.

From the small clubs of the Harlem Renaissance where he began playing saxophone to world tours for the biggest of the big bands, Benny Carter redefined American jazz. From the start, his fellow musicians said the way he played the sax was amazing. They say that about me, too. (Laughter.) But I don't think they mean it in quite the same way.

Our campaign is the opposite of 'competence.'

For too long we've been told about 'us' and 'them.' Each and every election we see a new slate of arguments and ads telling us that 'they' are the problem, not 'us.' But there can be no 'them' in America. There's only us.

We need to help younger people recognize their own capacity to do good, and help them discover the rewards of generosity.

I mean, when's the last time we elected a president based on one year of service in the Senate before he started running? I mean, he will have been a senator longer by the time he's inaugurated, but essentially once you start running for president full time you don't have time to do much else.