Barack Obama: “As I've said many times, I believe that change comes not from the top down but from the bottom up.”

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

A drift towards extremism was "not inevitable

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