September 11 was, and remains, above all an immense human tragedy. But September 11 also posed a momentous and deliberate challenge not just to America but to the world at large. The target of the terrorists was not only New York and Washington but the very values of freedom, tolerance and decency which underpin our way of life.

What is true about (ex-Iraq Survey Group head) David Kay's evidence, and this is something I have to accept, and is one of the reasons why I think we now need a new inquiry - it is true David Kay is saying we have not found large stockpiles of actual weapons.

I say the elite looks out of touch because it's kind of saying; look we'll manage all this for you. You know, we know best. We'll sort it all out for you. And then because people believe that doesn't meet their case for change and they want real change, social media and the way the relationship between people can come into a sense of belonging very quickly, that then is itself a revolutionary phenomenon. You see this around the world.

Be a doer and not a critic.

Surely we have the wit and will to develop economically without despoiling the very environment we depend upon

Some may belittle politics, but we know - who are engaged in it - that it is where people stand tall. And, although I know it has its many harsh contentions, it is still the arena that sets the heart beating a little faster. And if it is, on occasions, the place of low skulduggery, it is more often the place for the pursuit of noble causes.

My office is on Twitter. I don't tweet myself - at least, not intentionally, but I probably should do.