If the land mechanism as a whole is good then every part is good, whether we understand it or not.
Aldo LeopoldIs 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.
Aldo LeopoldThe last word in ignorance is the man who says of an animal or plant, "What good is it?" If the land mechanism as a whole is good, then every part is good, whether we understand it or not. If the biota, in the course of aeons, has built something we like but do not understand, then who but a fool would discard seemingly useless parts? To keep every cog and wheel is the first precaution of intelligent tinkering.
Aldo LeopoldOne of the anomalies of modern ecology is the creation of two groups, each of which seems barely aware of the existence of the other. The one studies the human community, almost as if it were a separate entity, and calls its findings sociology, economics and history. The other studies the plant and animal community and comfortably relegates the hodge-podge of politics to the liberal arts. The inevitable fusion of these two lines of thought will, perhaps, constitute the outstanding advance of this century.
Aldo Leopold