Barack Obama: “We are going to bring a long-overdue sense of responsibility and accountability to Washington.”

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.

I think when we act on that basis, it doesn't always work out, but over time things do get better.

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

A drift towards extremism was "not inevitable