After all, sustainability means running the global environment - Earth Inc. - like a corporation: with depreciation, amortization and maintenance accounts. In other words, keeping the asset whole, rather than undermining your natural capital.
Environmental degradation, overpopulation, refugees, narcotics, terrorism, world crime movements, and organized crime are worldwide problems that don't stop at a nation's borders.
Every time I have some moment on a seashore, or in the mountains, or sometimes in a quiet forest, I think this is why the environment has to be preserved.
I consider myself to have been the bridge between the shotgun and the binoculars in bird watching. Before I came along, the primary way to observe birds was to shoot them and stuff them.
I don't think we're going to save anything if we go around talking about saving plants and animals only; we've got to translate that into what's in it for us.
I see humanity now as one vast plant, needing for its highest fulfillment only love, the natural blessings of the great outdoors, and intelligent crossing and selection.
I think the environment should be put in the category of our national security. Defense of our resources is just as important as defense abroad. Otherwise what is there to defend?