Without trees, we cannot inhabit the earth.

Few people today muck around in earth, and when on international flights, I often find I have the only decently dirty fingernails.

Permaculture is an integrated, evolving system of perennial and self-perpetuating plants and animal species useful to man.

Type 1 Error: When we settle into wilderness, we are in conflict with so many life forms that we have to destroy them to exist. Keep out of the bush. It is already in good order.

Animals are the messengers of the tree, and trees the gardens of animals. Life depends upon life. All forces, all elements, all life forms are the biomass of the tree.

To create a mess in which we perish by our own inaction makes nonsense of our claim to consciousness and morality.

Stupidity is an attempt to iron out all differences, and not to use them or value them creatively.

There is no more time-wasting process than that of believing people will act, and then finding that they will not.

The American lawn uses more resources than any other agricultural industry in the world. It uses more phosphates than India and puts on more poisons than any other form of agriculture.

Compressed air can provide limitless amounts of clean energy using technology we have had for hundreds of years.