If the CIA is going to disrupt future terrorist attacks, it needs to recruit spies to infiltrate those groups in order to disrupt the terrorist attacks. Not to rely on what you and I are putting in chat messages on Google or Apple.

Immediately after the September 11th attacks, I volunteered to go to Afghanistan in any capacity that the CIA wanted me. Four months passed before I was able to go overseas, just because my skill set was not one that was important in those really early days after the attacks.

It's not up to Google, it's not up to Apple to turn over our personal communications in order to save the country. It's up to the CIA and it's up to the FBI to recruit foreign - I mean to recruit human sources, rather, to penetrate these groups.

It's much less romantic in that you have to go to www.cia.gov and click "Apply Now." For me it was much more clandestine.

Even if torture works, it cannot be tolerated -- not in one case or a thousand or a million. If their efficacy becomes the measure of abhorrent acts, all sorts of unspeakable crimes somehow become acceptable. I may have found myself on the wrong side of government on torture. But I'm on the right side of history. There are things we should not do, even in the name of national security. One of them, I now firmly believe, is torture.

I think the president, very simply, has never read a copy of the Constitution. I think that that's true. He's just never bothered to read the Constitution, and he just has no understanding and appreciation of the First Amendment's protections for freedom of speech.

The truth of the matter is, we can certainly fight against terrorism and fight terrorist groups around the world without having to give up our own civil liberties. They're not mutually exclusive.