Understand the causes of terror? Yes, we should try, but let there be no moral ambiguity about this: nothing could ever justify the events of September 11 and it is to turn justice on its head to pretend it could

Global warming is too serious for the world any longer to ignore its danger or split into opposing factions on it.

People should go about their daily lives, to work, to live, to travel, to shop, to do the things people did in the same way as they did them before 11 September.

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.

I cannot think of any circumstances in which a government can go to war without the support of parliament.

I mean, you can agree or disagree with Iraq or Afghanistan, but by the way, now the great campaigning cause out there is the absence of intervention in Syria. And then in Libya, it's partial intervention. And that doesn't really explain why some countries that have literally nothing to do with the interventions in the Middle East end up getting targeted.

We, therefore, here in Britain stand shoulder to shoulder with our American friends in this hour of tragedy, and we, like them, will not rest until this evil is driven from our world.