When we settled our country, the dark forest was considered in some ways evil and something that you needed to plow or, later, bulldoze. We now have a new understanding of the interconnectedness of ecosystems and the need for bird flyways and why all species matter.

If Reagan had intelligence information that showed that the upheaval in Egypt is actually Democratic in spirit, then he would have, I believe, turned his back on Mubarak, even though there's a long friendship between the United States and Egypt.

I feel like I'm always learning from people.

The world of high-stakes international diplomacy can be rough and tumble, but it's more often than not a procession of suits and summits, protocol sessions and photo ops.

Whoever wishes peace among peoples must fight statism.

If there is anything more frightening than the threat of global nuclear war, it is the certainty that humans not only stand on the verge of producing new life forms but may soon be able to tinker with them as if they were vintage convertibles or bonsai trees.

You can think of the entire Internet as a place where ideas embodied in cyberspace are having a war, and it's not much different than the war of gods in heaven, which has been taking place since there's been human beings.

The Greenham women left home for peace: 'Not in our name!' they cried. And in doing so, they spoke for millions.