Barack Obama: “In moving forward, we must always stress sustainability and conservation - principles that are best understood by…”

People need to “rediscover what’s the story we tell about how we’re going to live together, and see each other, and recognise each other, and disagree, and yet, still care for each other”.

It is a decision about how do we face and embrace this finite amount of time we have on the planet.

A drift towards extremism was "not inevitable

And I will fight for that, even if I don’t always think it’s going to win.