The commitment must be much deeper - to let no species knowingly die; to take all reasonable action to protect every species and race in perpetuity.

To be anthropocentric is to remain unaware of the limits of human nature, the significance of biological processes underlying human behavior, and the deeper meaning of long-term genetic evolution.

I will argue that every scrap of biological diversity is priceless, to be learned and cherished, and never to be surrendered without a struggle.

We don't need to clear the 4 to 6 percent of the Earth's surface remaining in tropical rain forests, with most of the animal and plant species living there.

A very Faustian choice is upon us: whether to accept our corrosive and risky behavior as the unavoidable price of population and economic growth, or to take stock of ourselves and search for a new environmental ethic.

If someone could actually prove scientifically that there is such a thing as a supernatural force, it would be one of the greatest discoveries in the history of science. So the notion that somehow scientists are resisting it is ludicrous.

Humanity, in the desperate attempt to fit 8 billion or more people on the planet and give them a higher standard of living, is at risk of pushing the rest of life off the globe.