In America today you can murder land for private profit. You can leave the corpse for all to see, and nobody calls the cops. – Paul Brooks, The Pursuit of Wilderness, 1971

It appears to be a law that you cannot have a deep sympathy with both man and nature. – Henry David Thoreau, Walden, 1854

Humanity is on the march, earth itself is left behind. – David Ehrenfeld, The Arrogance of Humanism, 1978

To waste, to destroy our natural resources, to skin and exhaust the land instead of using it so as to increase its usefulness, will result in undermining in the days of our children the very prosperity which we ought by right to hand down to them amplified and developed. – Theodore Roosevelt, seventh annual message, 3 December 1907