No one should be able to enter a wilderness by mechanical means.

It seems that every time mankind is given a lot of energy, we go out and wreck something with it.

The only way forward, if we are going to improve the quality of the environment, is to get everybody involved.

Take a course in good water and air and in the eternal youth of Nature you may renew your own. Go quietly, alone no harm will befall you.

People in Slow Food understand that food is an environmental issue.

The environment is everything that isn't me.

Much of the debate over global warming is predicated on fear, rather than science.

If we do not permit the earth to produce beauty and joy, it will in the end not produce food, either.

I firmly believe that we can have a healthy environment and a sustainable timber industry.

Our world faces a true planetary emergency. I know the phrase sounds shrill, and I know it's a challenge to the moral imagination.