For the first time in the history of the world, every human being is now subjected to contact with dangerous chemicals, from the moment of conception until death. – Rachel Carson, Silent Spring, 1962

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