Commodity Quote by Arthur C. Clarke

It's vital as we postulate and work toward exploration and human settlement beyond Earth. I like to think of the possibilities of sustaining humanity's…

— Vanna Bonta

We of course have our problems, to say the least, in comportment towards ourselves and our environment, but admittance to the cosmos and the…

— Paul Levinson

In wilderness is the preservation of the world.

— Henry David Thoreau

Space exploration must be undertaken not only out of simple human curiosity but also to further the survival of the species. The twentieth century…

— Edgar Mitchell

Clearly our first task is to use the material wealth of space to solve the urgent problems we now face on Earth: to bring…

— Gerard K. O'Neill

The reason to preserve wilderness is that we need it. We need wilderness of all kinds, large and small, public and private. Wee need…

— Wendell Berry

Only when I saw the Earth from space, in all its ineffable beauty and fragility, did I realize that humankind's most urgent task is…

— Sigmund Jahn

“These days, there seems to be nowhere left to explore. Victims of their very success, the explorers now, pretty much, stay home. Maybe it's…

— Carl Sagan

Admittedly, we must move ahead with the development of our land resources. Likewise, our technology must be refined. But in the long run life…

— Stewart Udall

If we human beings learn to see the intricacies that bind one part of a natural system to another and then to us, we…

— Gaylord Nelson

If Earth is considered a closed system, there will be less for all forever. The frontier is closed, the wilderness is gone, nature is…

— Barbara Marx Hubbard

There are three reasons, . . . apart from scientific considerations, mankind needs to travel in space. The first . . . is garbage…

— Freeman Dyson