"I will not sleep fine if Donald Trump wins and I will not sleep fine is Hillary Clinton wins. Whether you are looking at nuclear weapons, whether you are looking at expanding wars and their blowback, which will not stop as long as those wars continue to expand, or whether you're looking at the climate, in my view, we have no choice. This is an existential moment. We are deciding not only what kind of world we will have, but whether we will have a world or not. I think it's very important to get outside this box that tells us we are powerless, when in fact, we are powerful."