Which aspects of our nature will prevail is uncertain, particularly when our visions and prospects are bound to one small part of the small planet Earth. But up there in the Cosmos an inescapable perspective awaits.

There are lots of ways to communicate what we know, but few ways to communicate what we feel. Music is one way to communicate emotions.

What began in deadly competition has helped us to see that global cooperation is the essential precondition for our survival. Travel is broadening. It's time to hit the road again.

Those who seek power at any price detect a societal weakness, a fear that they can ride into office.

I think the health of our civilization, the depth of our awareness about the underpinnings of our culture, and our concern for the future, can all be tested by how well we support our libraries.

Books tap the wisdom of our species -- the greatest minds, the best teachers -- from all over the world and from all our history. And they're patient.

When permitted to listen to alternative opinions and engage in substantive debate, people have been known to change their minds. It can happen.