The life of every river sings its own song, but in most the song is long marred by the discords of misuse.

It is part of wisdom never to revisit a wilderness, for the more golden the lily, the more certain that someone has gilded it

Our remnants of wilderness will yield bigger values to the nation's character and health than they will to its pocketbook, and to destroy them will be to admit that the latter are the only values that interest us.

That land is a community is the basic concept of ecology, but that land is to be loved and respected is an extension of ethics.

The road to conservation is paved with good intentions that often prove futile, or even dangerous, due to a lack of understanding of either land or economic land use.

For one species to mourn the death of another is a new thing under the sun.

The oldest task in human history: to live on a piece of land without spoiling it.