I believe we should reframe our response to climate change as an imperative for growth rather than merely being a way of being green or meeting environmental commitments.

Ambition is best tempered with self-knowledge!

One day I will go back to my books and piano, but not yet.

You have to have as many defences in place as you possibly can. But even then of course - and it's important to stress this - you cannot guarantee being able to prevent every attack or every kind of attack.

Those who back the Syrian regime from now on will find themselves in an even more isolated and indefensible minority.

To the teacher weighed down with paperwork, I say: you've been messed around too often. You came into teaching to spend your time teaching children not filling in forms.

Inspiring scenes of people taking the future of their countries into their own hands will ignite greater demands for good governance and political reform elsewhere in the world, including in Asia and in Africa.