In certain ways, I'm not very different than I was when I was a teenager.

Earth Day 1970 was irrefutable evidence that the American people understood the environmental threat and wanted action to resolve it.

Recycling is a good thing to do. It makes people feel good to do it. The thing I want to emphasize is the vast difference between recycling for the purpose of feeling good and recycling for the purpose of solving the trash problem.

The age of innocent faith in science and technology may be over.

Technologists practice faith too; 'Faith that problems have solutions before having the knowledge to solve them.'

Nothing ever dies, nothing ever goes away.

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.