I believe we have a profound fundamental need for areas of the earth where we stand without our mechanisms that make us immediate masters over our environment.

The wilderness that has come to us out of the eternity of the past, we have the boldness to project into the eternity of the future.

By very definition this wilderness is a need. The idea of wilderness as an area without man's influence is man's own concept. Its values are human values. Its preservation is a purpose that arises out of man's own sense of his fundamental needs

We deeply need the humility to know ourselves as the dependent members of a great community of life, and this can indeed be one of the spiritual benefits of a wilderness experience. ... [T]o know the wilderness is to know a profound humility, to recognize one's littleness, to sense dependence and interdependence, indebtedness and responsibility.