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

We may learn anew what compassion and beauty are, and pause to listen to the Earth's music.

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.

Yet another proposal would have us rocket the waste into the sun, but, as you're probably aware, about one in ten of our space shots doesn't quite make it out of the earth's gravitational field.

The Peninsula is what we have and there is no more where it came from.

If something's going wrong with this planet we'd better fix it here and not look for some sort of escape.

Overpopulation is perhaps the biggest problem facing us, and immigration is part of that problem. It has to be addressed.