In an interview with The Huffington Post that aired in full on Monday evening on HuffPost Live , Warren, a Democrat from Massachusetts, was asked about the promise in her book that she was "fiercely determined to do everything I can to help us once again be the America that creates opportunities for anyone who works hard and plays by the rules." She was also questioned about her warning that "we're running out of time."

"I do believe in us," said Warren. "And I believe in us on days like this, on a morning where a whole lot of people come together to talk about ideas, to talk about two books. Because what we're talking about in here is we're talking about economics, we're talking about power, but we're also talking about values. This is a moment in time for our country and, I believe, for our world, a moment in time where we decide who we are as a people and what kind of a future we're going to build. As your [Thomas Piketty's] book shows, it's tough, it is an uphill climb. It will not happen naturally that the world will even back out. But what it also shows is that these are not natural forces that make it happen, it's a set of rules by which we govern ourselves, and here in America we the people get to decide what the rules are. So I get how hard this is. This is about concentrated money and power on one side, but it's about our values, our voices and our votes on our side. I believe we can fight back. I believe we can win."