Steve Irwin did wonderful conservation work but I was uncomfortable about some of his stunts. Even if animals aren't aware that you are not treating them with respect, the viewers are.

I think, on a personal level, everybody, when you go through the checkout line after you get your groceries and they say, 'Paper or plastic?' We should be saying, 'Neither one.' We should have our own cloth bags.

As a child, I used to have a secret dread - and a recurring nightmare - of the whole world becoming city, being covered with cement and buildings and streets. No more country. No more woods.

At times I feel as if I am spread out over the landscape and inside things, and am myself living in every tree, in the plashing of the waves, in the clouds and the animals that come and go, in the procession of the seasons.

Calvin: Today for show and tell, I've brought a tiny miracle of nature: a single snowflake! I think we might all learn a lesson from how this utterly unique and exquisite crystal turns into an ordinary, boring molecule of water just like every other one when you bring it into the classroom. And now, while the analogy sinks in, I will be leaving you drips and going outside.

A lone peak of high point is a natural focal point in the landscape, something by which both travelers and local orient themselves. In the continuum of landscape, mountains are discontinuity -- culminating in high points, natural barriers, unearthly earth.