It's naive and even irresponsible for a grownup today to get her or his information about foreign policy and war and peace exclusively from the administration in power. It's essential to have other sources of information, to check those against one's own common sense, and to form your own judgment as to whether we ought to go to or persist in war.

My feelings of revulsion and foreboding about nuclear weapons had not changed an iota since 1945, and they have never left me. Since I was 14, the overriding objective of my life has been to prevent the occurrence of nuclear war.

In my estimation, there has not been in American history a more important leak than Edward Snowden's release of NSA material – and that definitely includes the Pentagon Papers 40 years ago.

Nixon did have a secret plan, and I knew that it involved making threats of nuclear war to North Vietnam.

If there's another 9/11 or a major war in the Middle-East involving a U.S. attack on Iran, I have no doubt that there will be, the day after or within days an equivalent of a Reichstag fire decree that will involve massive detentions in this country.

EVERY attack now made on WikiLeaks and Julian Assange was made against me and the release of the Pentagon Papers at the time.

There are two types of courage involved with what I did. When it comes to picking up a rifle, millions of people are capable of doing that, as we see in Iraq or Vietnam. But when it comes to risking their careers, or risking being invited to lunch by the establishment, it turns out that's remarkably rare.