I believe humanity is a pretty interesting lot, and they're all really busy doing and thinking interesting things.

I could never teach people to be philosophers - and if I did, you could never make a gardener out of them.

What is proposed herein is that we have no right, nor any ethical justification, for clearing land or using wilderness while we tread over lawns, create erosion, and use land inefficiently. Our responsibility is to put our house in order. Should we do so, there will never be any need to destroy wilderness.

If you're dealing with an assembly of biological systems, you can bring the things together, but you can't connect them.

There are only four things in all cleaners - whether it's shampoo, laundry detergent, whatever.You buy them in bulk and you mix them up properly, and they all work. It doesn't matter if they call the stuff ecologically friendly or have dolphins diving around on the label - it still has these damn four things in it. Anything else is just unnecessary additions to make it smell good or color it blue when it goes down the toilet.

The agriculture taught at colleges between 1930 and 1980 has caused more damage on the face of the Earth than any other factor.

Humans were my study animal now - I set up night watches on them, and I made phonograms of the noises they make. I studied their cries, and their contact calls, and their alarm signals. I never listened to what they were saying - I watched what they were doing, which is really the exact opposite of the Freuds and Jungs and Adlers.