One of the things that you come pretty early on to understand in this job, and you start figuring out even during the course of the campaign, is that there's Barack Obama the person and there's Barack Obama the symbol, or the office holder, or what people are seeing on television, or just a representative of power. And so when people criticize or respond negatively to me, usually they're responding to this character that they're seeing on TV called Barack Obama, or to the office of the presidency and the White House and what that represents.

We do have to balance this issue of privacy and security. Those who pretend that there's no balance that has to be struck and think we can take a 100-percent absolutist approach to protecting privacy don't recognize that governments are going to be under an enormous burden to prevent the kinds of terrorist acts that not only harm individuals, but also can distort our society and our politics in very dangerous ways.

I think that [having not a lot of time sweating the details] can be both a strength and a weakness. I think it depends on how [Donald Trump] approaches it. If it gives him fresh eyes, then that can be valuable. But it also requires you knowing what you don't know and putting in place people who do have the kinds of experience and background and knowledge that can inform good decision making.

I want to reduce America's deficit by cutting spending that we don't need but also by asking the wealthy to do a little bit more so that we can invest in things like research and technology that are the key to a 21st century economy.

I know the American people. I've met a lot of them. I've met a lot more of them than any columnist has, or any talking head on TV has. And they're pretty sophisticated.

If we want to really reduce foreign influence on our elections, then we better think about how to make sure that our political process, our political dialogue is stronger than it's been.

America ranks 21st when it comes to math education. We rank 25th when it comes to science. We used to be number one in the proportion of college graduates. We now rank ninth. And at an age where knowledge, skills, are the determinant of how successful we're going to be, unless we reverse that we're going to keep slipping behind economically to a lot of other countries.