A question I often get is, "How do you maintain your sanity with so much happening all around you?" I think I developed a certain mental toughness that is required in the business. You have to have a thick skin and a brass bottom, because you're going to kicked a lot.

You ought not be afraid of nuclear, but respectful of it. Yes, it has dangers, but it also has benefits. If not for nuclear, much of the medicine that's saving lives today would not be in existence.

I have always abhorred the word racism. I never use it.

An ability to compromise is important. That means stepping back and getting the ego out of the way in order to accomplish what you want to get done.

A lot of very competent people sometimes make errors.

Has he paid his dues? Is he black enough? John Lewis and I were out there marching and organizing sit-ins back in the '60s so that his children and my children would not have to do it. We would have been failures if had to do the same things we did.

I admire and respect Bill Clinton. I think he was a great president.