I have faith, as I did when I announced my stem-cell decision in 2001, that science and ethics can coexist.

We all know the big elephant in the room. The big elephant in the room is African governments. Africa has been totally mismanaged and misruled, but nobody wants to talk about that because of political correctness.

I strongly believe what we're doing is the right thing. If I didn't believe it -- I'm going to repeat what I said before -- I'd pull the troops out, nor if I believed we could win, I would pull the troops out.

We're getting rid of the D [in PTSD]. PTS is an injury; it's not a disorder. The problem is when you call it a disorder, [veterans] don't think they can be treated. An employer says, 'I don't want to hire somebody with a disorder.

If we're an arrogant nation, they'll resent us; if we're a humble nation, but strong, they'll welcome us. And our nation stands alone right now in the world in terms of power, and that's why we've got to be humble, and yet project strength in a way that promotes freedom.

I believe that freedom is the deepest need of every human soul.

How can you possibly have an international agreement that's effective unless countries like China and India are not full participants?