Conservation is a state of harmony between men and land.

I confess my own leisure to be spent entirely in search of adventure, without regard to prudence, profit, self improvement, learning, or any other serious thing.

The richest values of wilderness lie not in the days of Daniel Boone, nor even in the present, but rather in the future.

Like winds and sunsets, wild things were taken for granted until progress began to do away with them

If in a city we had six vacant lots available to the youngsters of a certain neighborhood for playing ball, it might be "development" to build houses on the first, and the second, and the third, and the fourth, and even the fifth, but when we build houses on the last one, we forget what houses are for.

No matter how intently one studies the hundred little dramas of the woods and meadows, one can never learn all the salient facts about any one of them.

I have purposely presented the land ethic as a product of social evolution because nothing so important as an ethic is ever 'written'… It evolves in the minds of a thinking community.