We are a people of faith. We have been so secure in that faith that we have enshrined in our Constitution protection for people who profess no faith. And good for us for doing so. That is what the First Amendment is all about.

The new energy future is decentralised, entrepreneurial and needs people like you to say 'Give me a clean car, give me solar shingles to put on my roof - give me a clean future'

I was also very concerned about protecting my family.

Two-thirds of the Iranian people would like to be reconciled with the West. They don't like the fanaticism of the governing religious council. It's the only place in the world where the last six elections have been won by the more progressive candidate, two for president, two for the mayors, two for the parliament. So most people there are sympathetic to the world we Americans want to build, whether we're Republicans or Democrats. On the other hand, almost everybody there wants them to have nuclear power. They see it as a status symbol, and a sense of their own security.

Our paradigm now seems to be: Something terrible happened to us on September 11, and that gives us the right to interpret all future events in a way that everyone else in the world must agree with us. And if they don't, they can go straight to hell.

I think it's very important, and I think that what young people will learn from my experience is that even presidents have to do that and there are consequences when you don't. But I also think that there will be a box score, and there will be that one negative, and then there will be the hundreds and hundreds and hundreds of times when the record will show that I did not abuse my authority as president, that I was truthful with the American people.

We are more connected than ever before, more able to spread our ideas and beliefs, our anger and fears. As we exercise the right to advocate our views, and as we animate our supporters, we must all assume responsibility for our words and actions before they enter a vast echo chamber and reach those both serious and delirious, connected and unhinged.