Wilderness is a resource which can shrink but not grow.

Is 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.

Tell me of what plant-birthday a man takes notice, and I shall tell you a good deal about his vocation, his hobbies, his hay fever, and the general level of his ecological education.

Conservation will ultimately boil down to rewarding the private landowner who conserves the public interest.

Examine each question in terms of what is ethically and aesthetically right, as well as what is economically expedient.

...to any one for whom wild things are something more than a pleasant diversion, (conservation) constitutes one of the milestones in moral evolution.

I love all trees, but I am in love with pines.