Barack Obama: “We have an obligation to our children to keep these spaces pristine.”

When we choose, when we make that decision, I do believe – and there is evidence for this – that the world gets incrementally better, and that is a worthy goal and it’s worth fighting for.

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.

It is a basic principle of American democracy that the government can’t selectively target individuals simply because of their political beliefs or what they say.

I’m going to insist that we can do better than we’re doing right now.