“We needn't be saddened with the impossible weight of managing the entire biosphere, but we must meet the challenge of living in balance with the sacred elements.”

“Change is never easy, and it often creates discord, but when people come together for the good of humanity and the Earth, we can accomplish great things.”

“There are some things in the world we can't change - gravity, entropy, the speed of light, and our biological nature that requires clean air, clean water, clean soil, clean energy and biodiversity ...”

“The failure of world leaders to act on the critical issue of global warming is often blamed on economic considerations.”

“The human brain now holds the key to our future. We have to recall the image of the planet from outer space: a single entity in which air, water, and continents are interconnected. That is our home.”

“The medical literature tells us that the most effective ways to reduce the risk of heart disease, cancer, stroke, diabetes, Alzheimer's, and many more problems are through healthy diet and exercise...”

“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 ...”