The environmental crisis is a signal of this approaching catastrophe.

Despite the dazzling successes of modern technology and the unprecedented power of modern military systems, they suffer from a common and catastrophic fault. While providing us with a bountiful supply of food, with great industrial plants, with high-speed transportation, and with military weapons of unprecedented power, they threaten our very survival.

Nothing can survive on the planet unless it is a cooperative part of larger global life.

After all, despite the economic advantage to firms that employed child labor, it was in the social interest, as a national policy, to abolish it - removing that advantage for all firms.

Everything is connected to everything else. Everything must go somewhere. Nature knows best. There is no such thing as a free lunch.

All of the clean technologies are known, it's a question of simply applying them.

Finally, since human beings are uniquely capable of producing materials not found in nature, environmental degradation may be due to the resultant intrusion into an ecosystem of a substance wholly foreign to it.