Barack Obama: “It was the first Republican President, Abraham Lincoln, who launched a transcontinental railroad.”

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”.

If I had a blame pie for why politics is so polarised and why we're seeing a rise of populism in many places, it's because of that information that is going into our brains every day.

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.