Barack Obama: “What we have seen is that, in the breach, a culture of cynicism and mistrust can grow.”

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

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

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