What's happened is the land ethic has changed.

"But you've got a whole lot of people using the outdoors who aren't educated in any kind of land ethic."

Leopold's principal and extraordinary contribution to our world was to articulate the idea of a land ethic.

For example, Leopold himself defines and argues against an economic land ethic.

This is a land ethic based wholly upon economic self-interest.

He had read a fair amount of material, concentrating particularly on the land ethic, and the fact-value interface.

Monolithic public works have been substituted for regional planning and a responsible land ethic.

The land ethic is perhaps most radical in maintaining that nobody deserves such peace of mind.

That was an application of the land ethic of which Leopold would have approved.

Over the past decade it has been growing at a rate of 15-25% a year - there is real economic growth, jobs, better health, land ethic.