The struggle to create a nation and world of economic and social justice and environmental sanity is not an easy one. The struggle to try and create a more peaceful world will be extremely difficult. But this I know: despair is not an option if we care about our kids and grandchildren. Giving up is not an option if we want to prevent irreparable harm to our planet.

I want to know in this day and age, whether it is possible for any candidate who is not a billionaire or who is not beholden to the billionaire class, to be able to run successful campaigns.

I believe, along with Pope Francis and almost all scientists, that climate change is threatening this planet in horrendous ways, and that we have to be aggressive in transforming our energy system away from fossil fuel and defeat the Keystone Pipeline.

If you want to talk about somebody who's actually been tough on Russia, look at President Trump. He wants more fracking, more coal, more energy, a stronger military, a stronger defense. Those things aren't good for Russia.

I've lost six different times. You can't say, 'Well, he lost, that's the end of the world.' You have to say, 'Okay, you lost, what did we do wrong?

I think our trade policies, for many, many years, have been a disaster. They have benefited corporate America at the expense of working people.

Washington is dominated by big money.