"We may not appreciate the fact; but a fact nevertheless it remains: we are living in a Golden Age, the most gilded Golden Age of human history—not only of past history, but of future history. For, as Sir Charles Darwin and many others before him have pointed out, we are living like drunken sailors, like the irresponsible heirs of a millionaire uncle. At an ever accelerating rate we are now squandering the capital of metallic ores and fossil fuels accumulated in the earth’s crust during hundreds of millions of years. How long can this spending spree go on? Estimates vary. But all are agreed that within a few centuries or at most a few millennia, Man will have run through his capital and will be compelled to live, for the remaining nine thousand nine hundred and seventy or eighty centuries of his career as Homo sapiens, strictly on income. Sir Charles is of the opinion that Man will successfully make the transition from rich ores to poor ores and even sea water, from coal, oil, uranium and thorium to solar energy and alcohol derived from plants. About as much energy as is now available can be derived from the new sources—but with a far greater expense in man hours, a much larger capital investment in machinery. And the same holds true of the raw materials on which industrial civilization depends. By doing a great deal more work than they are doing now, men will contrive to extract the diluted dregs of the planet’s metallic wealth or will fabricate non-metallic substitutes for the elements they have completely used up. In such an event, some human beings will still live fairly well, but not in the style to which we, the squanderers of planetary capital, are accustomed."

"Our way of walking on the Earth has a great influence on animals and plants. We have killed so many animals and plants and destroyed their environments. Many are now extinct. In turn, our environment is now harming us. We are like sleepwalkers, not knowing what we are doing or where we are heading. Whether we can wake up or not depends on whether we can walk mindfully on our Mother Earth. The future of all life, including our own, depends on our mindful steps."

"All life is impermanent. We are all children of the Earth, and, at some time, she will take us back to herself again. We are continually arising from Mother Earth, being nurtured by her, and then returning to her. Like us, plants are born, live for a period of time, and then return to the Earth. When they decompose, they fertilize our gardens. Living vegetables and decomposing vegetables are part of the same reality. Without one, the other cannot be. After six months, compost becomes fresh vegetables again. Plants and the Earth rely on each other. Whether the Earth is fresh, beautiful, and green, or arid and parched depends on the plants. It also depends on us."

"This explosion of human population, especially in the post-Industrial Revolution years of the past two centuries, coupled with the unequal distribution and consumption of wealth on the planet, is the underlying cause of the Sixth Extinction."

"There is little doubt left in the minds of professional biologists that Earth is currently faced with a mounting loss of species that threatens to rival the five great mass extinctions of the geological past."

"Indeed, to develop agriculture is essentially to declare war on ecosystems — converting land to produce one or two food crops, with all other native plant species all now classified as unwanted 'weeds' — and all but a few domesticated species of animals now considered as pests."

"I take courage, however, in the fact that the conservation effort has a broader base than ever before. There is more organized effort; there are many more individuals who are conscious of conservation problems and who are striving, in their own communities or on the national scene, to solve these problems."

"More than a billion women around the world want to emulate western women’s lifestyles and are rapidly acquiring the material ability to do so. It is therefore vital that in our leadership we display some reserve and responsibility in our spending so that the world’s finite resources will be available for our children, their children and their children’s children."

"Agriculture represents the single most profound ecological change in the entire 3.5 billion-year history of life."