September Democratic candidates debate: on Principles & Values

Bernie Sanders: Democratic socialism means like Canada, not Venezuela

SANDERS: To equate what goes on in Venezuela with what I believe is extremely unfair. I'll tell you what I believe in terms of democratic socialism. I agree with goes on in Canada and in Scandinavia, guaranteeing health care to all people as a human right. I believe that the US should not be the only major country on earth not to provide paid family and medical leave. I believe that every worker in this country deserves a living wage & that we expand the trade union movement. I happen to believe also that what, to me, democratic socialism means, is we deal with an issue we do not discuss enough--You've got a handful of billionaires controlling what goes on in Wall Street, the insurance companies and in the media. Maybe, just maybe, what we should be doing is creating an economy that works for all of us, not 1 percent. That's my understanding of democratic socialism.

Cory Booker: Unity of purpose leads to transformative change

Joe Biden: Deal with loss by finding purpose in what you do

BIDEN: I think the most critical setback that can occur to anyone is to lose family. [The philosopher Soren] Kierkegaard said "faith sees best in the dark." Right after I got elected, my wife and daughter were killed in an automobile accident. And I lost my faith for a while. I came back.

And then later, when my son Beau came home from Iraq with a terminal disease, and a year later, losing him was like losing part of my soul.

But the fact is that I learned that the way you deal with it is you deal with finding purpose, purpose in what you do. We've all been through that, in some form or another. And for me, the way I've dealt with it is finding purpose. And my purpose is to do what I've always tried to do and stay engaged in public policy.

But there's a lot of people been through a lot worse than I have who get up every single morning, put their feet one foot in front of another, without the help I had.

Julian Castro: Bold, new vision to lift up Americans

Kamala Harris: Commonalities unite us more than racism divides us

Pete Buttigieg: Unity and bold ideas will solve our challenges