Is it possible to preserve the element of Unknown Places in our national life? Is it practicable to do so, without undue loss in economic values? I say 'yes' to both questions. But we must act vigorously and quickly, before the remaining bits of wilderness have disappeared.

Land is not merely soil, it is a fountain of energy flowing through a circuit of soils, plants and animals.

The last word in ignorance is the man who says of an animal or plant: 'What good is it?

The problem, then, is how to bring about a striving for harmony with land among a people many of whom have forgotten there is any such thing as land, among whom education and culture have become almost synonymous with landlessness. This is the problem of conservation education.

To build a road is so much simpler than to think of what the country really needs.

Wilderness is a resource which can shrink but not grow.

One of the penalties of an ecological education is that one lives alone in a world of wounds.