...to any one for whom wild things are something more than a pleasant diversion, (conservation) constitutes one of the milestones in moral evolution.
Aldo LeopoldWilderness is a resource which can shrink but not grow. Invasions can be arrested or modified in a manner to keep an area usable either for recreation, science or for wildlife, but the creation of new wilderness in the full sense of the word is impossible. It follows, then, that any wilderness program is a rearguard action, through which retreats are reduced to a minimum.
Aldo LeopoldHydrologists have demonstrated that the meanderings of a creek are a necessary part of the hydrologic functioning. The flood plain belongs to the river. The ecologist sees clearly that for similar reasons we can get along with less channel improvement on Round River.
Aldo LeopoldI have purposely presented the land ethic as a product of social evolution because nothing so important as an ethic is ever 'written'… It evolves in the minds of a thinking community.
Aldo Leopold