People must feel that the natural world is important and valuable and beautiful and wonderful and an amazement and a pleasure.

No one will protect what they don't care about, and no one will care about what they have never experienced.

The truth is: the natural world is changing. And we are totally dependent on that world. It provides our food, water and air. It is the most precious thing we have and we need to defend it.

Instead of controlling the environment for the benefit of the population, perhaps we should control the population to ensure the survival of our environment

What humans do over the next 50 years will determine the fate of all life on the planet.

Anyone who believes in indefinite growth on a physically finite planet is either mad or an economist

The World is full of wonders, but they become more Wonderful, not less Wonderful when Science looks at them.

The question is, are we happy to suppose that our grandchildren may never be able to see an elephant except in a picture book?

How could I look my grandchildren in the eye and say I knew what was happening to the world and did nothing.

Bringing nature into the classroom can kindle a fascination and passion for the diversity of life on earth and can motivate a sense of responsibility to safeguard it.

I just wish the world was twice as big and half of it was still unexplored.

teams build a business. Culture builds the team.

He can't really love anyone, you know, and in the end such people are always alone, no matter how much other people once loved them.

The commercial media are to the mental environment what factories are to the physical environment

There is so much to groak; So little to groak from.

Whenever people say they didn't like the main character of a book, they mean they didn't like the book. The main character has to be a friend? I don't get that.

I don't show every picture that I have, I think discretion is also important.

You can't have a healthy economy without sound money, which is why we're on the verge of very serious economic problem.

To understand the nature of love — that is to be a Christian!

Give me the gift of a listening heart.

Once I built a railroad; now it's done. Brother, can you spare a dime?