Normally when people say they haven't decided, they're being polite but they're definitely not voting for you. I think it's different this time. People are thinking hard about the issues.

We're all agreed that climate change is one of the greatest and most daunting challenges of our age. We have a moral imperative to act and act now.

From Caesar's legions to the Napoleonic wars. From the Reformation, the Enlightenment and the industrial revolution to the defeat of nazism. We have helped to write European history, and Europe has helped write ours.

It [European Union] has kept the peace in Europe. Countries used to fight and now they talk. We should be attached to that.

In a race for limited resources, it is the energy efficient that will win the race

We must consider teaching the Egyptian revolution in schools.

It does not seem to me that the steps which would be needed to make Britain - and others - more comfortable in their relationship in the European Union are inherently so outlandish or unreasonable.