Once we open the door to the plutonium economy, we expose ourselves to absolutely terrible, horrifying risks from these people.

We tried burying the waste at sea and the concrete cannisters that held it cracked open.

Until four years ago, in fact, I was absolutely in love with the atom.

It is absolutely imperative that we protect, preserve and pass on this genetic heritage for man and every other living thing in as good a condition as we received it.

When people say, 'You're not being realistic,' they're just trying to tag some thoughts that they can't otherwise handle.

For how many people do you think might yet stand on this planet before the sun grows cold? That's the responsibility we hold in our hands.