“If all mankind were to disappear, the world would regenerate back to the rich state of equilibrium that existed ten thousand years ago. If insects were to vanish, the environment would collapse int...”

“The race is now on between the technoscientific and scientific forces that are destroying the living environment and those that can be harnessed to save it. . . . If the race is won, humanity can e...”

“They travel long distances to stroll along the seashore, for reasons they can't put into words.”

“There is no better high than discovery.”

“Human beings were made for music. Its thrill and rapture are picked up almost immediately by little children”

“Human beings appear to be sufficiently selfish and calculating to be capable of indefinitely greater harmony and social homeostasis. This statement is not self-contradictory. True selfishness, if o...”

“I don't think that God says, "Go to church and pray all day and everything will be fine." No. For me God says, "Go out and make the changes that need to be made, and I'll be there to help you.”

“Our work is not about transcending this world to get to a better place; our work is to be fully present here; to heal ourselves, and our planet in the spirit of service and compassion.”

“How wonderful it is that nobody need wait a single moment before starting to improve the world.”

“Even the Middle Ages, which condemned and punished animals in due form, was in this way much closer to them than we are. They held them to be guilty: which was a way of honoring them. We take them ...”

“The clearest way into the Universe is through a forest wilderness.”

“Until one has loved an animal, a part of one's soul remains unawakened.”

“I am glad I will not be young in a future without wilderness.”

“We need the tonic of wildness...At the same time that we are earnest to explore and learn all things, we require that all things be mysterious and unexplorable, that land and sea be indefinitely wi...”

“Something will have gone out of us as a people if we ever let the remaining wilderness be destroyed ... We simply need that wild country available to us, even if we never do more than drive to its ...”