The world of politics is divided between people who are introverts - who lose a little bit of energy out of each interaction they have so that by the time the day ends, after 1,000 interactions, they're exhausted - and people like Bill Clinton who are extroverted - who get a little bit of energy from each interaction.

You and I and almost all Americans are beneficiaries of the new economy. But we are also losing parts of our lives to the new economy - aspects of our family lives, our friendships, our communities, ourselves.

Today, for good or ill, people are thinking about many social problems from the standpoint of their own kitchen tables. I think the way to begin a conversation with people about what's going on is to address their daily experiences, and what their fears and frustrations, as well as their exhilarations, are.

As to the meaning of "corporate social responsibility," Friedman and I would agree: If a certain action improves the corporation's bottom line, there's no point in labeling it "socially responsible." It's just good business.

The intellectual equipment needed for the job of the future is an ability to define problems, quickly assimilate relevant data, conceptualize and reorganize the information, make deductive and inductive leaps with it, ask hard questions about it, discuss findings with colleagues, work collaboratively to find solutions and then convince others.

I think that it's difficult to talk about large questions of economics or social policy without understanding the building blocks of society. And those building blocks are organizations, the people who run them, and the people who work in them.

Look, any cut in greenhouse gases is going to be expensive for American consumers, who are in no mood to bear additional costs.