I make no apologies for being reasonable.

In Europe, where the terrorist threat is probably greatest at the moment, the amount of information-sharing that's been taking place, the effectiveness of law enforcement across borders gives us the ability to protect ourselves while still being true to the basic precepts of our liberal democracies. I hope that that continues, and it is something that I think we should be worried about.

On the spectrum of successful politicians, I'm not introverted the way some have been.

If you give up on the idea that your voice can make a difference, then other voices will fill the void: lobbyists and special interests; the people with the $10 million checks who are trying to buy this election and those who are making it harder for you to vote; Washington politicians who want to decide who you can marry, or control health care choices that women should make for themselves.

There's no doubt that on the issue of abortion, oftentimes it's very difficult to split the difference, although we can agree on the notion that none of us are pro-abortion and all of us would like to see a reduction in unwanted pregnancies, for example, and we could focus on those issues.

I've always wanted to come to Greece.

In fact, the best thing we could do on taxes for all Americans is to simplify the individual tax code. This will be a tough job, but members of both parties have expressed an interest in doing this, and I am prepared to join them.