A sustainable agriculture is one which depletes neither the people nor the land.

The rule, acknowledged or not, seems to be that if we have great power we must use it. We would use a steam shovel to pick up a dime. We have experts who can prove there is no other way to do it.

In living in the world by his own will and skill, the stupidest peasant or tribesman is more competent than the most intelligent worker or technician or intellectual in a society of specialists.

It is understood that nonhuman creatures adapt to their places or they don't live. And for some reason that I can't figure out, even the biologists have excused our own species from that obligation. I think there's going to be a biological penalty to be paid for that eventually.

It was a country . . . that he and his people had known how to use and abuse, but not how to preserve.

Far from making peace, wars invariably serve as classrooms and laboratories where men and techniques and states of mind are prepared for the next war.

It may be that when we no longer know what to do, we have come to our real work, and that when we no longer know which way to go, we have begun our real journey.