I think, there is a possibility - I would say it's more than that - that we will come to a view of foreign policy going forward that learns from the past but doesn't get captured by it.

If we are wrong, we will have destroyed a threat that, at its least is responsible for inhuman carnage and suffering. That is something I am confident history will forgive.

There is good evidence that last year's European heat wave was influenced by global warming. It resulted in 26,000 premature deaths and cost $13.5bn.

The money from Iraqi oil will be yours - it will no longer be used by Saddam Hussein for his own benefit.

Genetic modification has many different areas, for example in medicine, and Britain is at the leading edge of this new technology. I don't know, but people tell me, it could indeed by the leading science of the 21st century. All I say to people is: 'Just keep an open mind and let us proceed according to genuine scientific evidence.'

Ever so often in the history of human endeavour, there comes a breakthrough that takes humankind across a frontier into a new era. ... today's announcement is such a breakthrough, a breakthrough that opens the way for massive advancement in the treatment of cancer and hereditary diseases. And that is only the beginning.

The 21st century will not be about the battle between capitalism and socialism but between the forces of progress and the forces of conservatism.