Wilderness is the raw material out of which man has hammered the artifact called civilization. Wilderness was never a homogenous raw material. It was very diverse. The differences in the product are known as cultures. The rich diversity of the worlds cultures reflects a corresponding diversity. In the wilds that gave them birth.
Aldo LeopoldWilderness, then, assumes unexpected importance as a laboratory for the study of land - health.
Aldo LeopoldOur grandfathers were less well-housed, well-fed, well-clothed than we are. The strivings by which they bettered their lot are also those which deprived us of [Passenger] pigeons. Perhaps we now grieve because we are not sure, in our hearts, that we have gained by the exchange. The gadgets of industry bring us more comforts than the pigeons did, but do they add as much to the glory of the spring?
Aldo LeopoldAll ethics so far evolved rest upon a single premise: that the individual is a member of a community of interdependent parts.
Aldo Leopold