I choose to live in what I think is the greatest country in the world, which is committing horrendous terrorist acts and should stop.

Obama's latest line is that he didn't establish a "red line" but the world did through its conventions on chemical warfare.

Our ignorance can be divided into problems and mysteries. When we face a problem, we may not know its solution, but we have insight, increasing knowledge, and an inkling of what we are looking for. When we face a mystery, however, we can only stare in wonder and bewilderment, not knowing what an explanation would even look like.

Karl Marx said, “The task is not just to understand the world but to change it.” A variant to keep in mind is that if you want to change the world you’d better try to understand it. That doesn’t mean listening to a talk or reading a book, though that’s helpful sometimes. You learn from participating. You learn from others. You learn from the people you’re trying to organize. We all have to gain the understanding and the experience to formulate and implement ideas.

The US health-care system is a complete scandal. It's got twice the costs of comparable countries and some of the worst outcomes.

There is a social responsibility to take care of vulnerable people. It seems that a sensible social responsibility is obligatory education, but also decent education, and that is not happening.

In fact, I was in a lab that was a hundred percent funded by the Pentagon, and it was one of the centers of the organized antiwar resistance movement.