Groups become more extreme and entrenched in their beliefs and polarized from others when members only exchange information that reinforces their views and filter out all else or never learn of alternatives. Thus they narrow their options, and magnify each other's prejudices and misconceptions. This trend leads to blind spots in decision making and to extreme behavior, even terrorism.

My own view is that institutions are a glory, and for all their imperfections, something really to be proud of. It is true that things can be a lot better than they are. It's okay to emphasize that.

I have talked to Barack Obama about Star Wars recently, in the Oval Office, and he is definitely a fan. Article 2, Section 1 of the Constitution creates executive privilege, and as for government regulation and information policy, so too for Star Wars, I will not disclose discussions in private with the President of the United States.

I have argued in favor of a reformulation of First Amendment law. The overriding goal of the reformulation is to reinvigorate processes of democratic deliberation, by ensuring greater attention to public issues and greater diversity of views.

I dealt with people with diverse political views. If you find people who are your political opponents, and talk to them for an hour, chances are you're going to like them, and they're not full of hate.

Sometimes, the word 'voluntary' is a little complicated.

The U.S. is blessed with tremendously creative and imaginative law students at places like Chicago, Harvard, Columbia and Yale.