“The old myth of unlimited growth alienates human beings from nature. To live sustainably we must respect nature and live by its rules. We must walk softly, leaving as small a footprint as possible.”

“To live sustainably, we must live efficiently - not misdirecting or squandering the earth's precious resources. To live efficiently, we must live peacefully for military expenditures represent an enormous diversion of resources from meeting basic human needs. To live peacefully, we must live with a reasonable degree of equity, or fairness, for it is unrealistic to think that, in a communications-rich world, a billion people will except living in absolute poverty while another billion live in conspicuous excess.”

“We must imagine our lives well. We must engage our conscience. Conscience is the voice of God in the nature and heart of man.”

“We must not listen to those who advise us 'being men to think human thoughts, and being mortal to think mortal thoughts' but must put on immortality as much as possible and strain every nerve to live according to that best part of us, which, being small in bulk, yet much more in its power and honour surpasses all else.”

“We must remember that nature is the supreme cradle of life, and must be protected and treated with the highest respect and care.”

“There are two lives, the natural and the spiritual, and we must lose the one before we can participate in the other.”