We have to walk in a way that we only print peace and serenity on the Earth. Walk as if you are kissing the Earth with your feet. – Thích Nhất Hạnh

So bleak is the picture… that the bulldozer and not the atomic bomb may turn out to be the most destructive invention of the 20th century. – Philip Shabecoff, New York Times Magazine, 4 June 1978

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

The control man has secured over nature has far outrun his control over himself. – Ernest Jones, The Life and Work of Sigmund Freud, 1953