At first blush I am tempted to conclude that a satisfactory hobby must be in large degree useless, inefficient, laborious, or irrelevant.

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

Keeping records enhances the pleasure of the search and the chance of finding order and meaning in these events.

Cease being intimidated by the argument that a right action is impossible because it does not yield maximum profits, or that a wrong action is to be condoned because it pays.

The last word in ignorance is the man who says of an animal or plant: 'What good is it?

That land is a community is the basic concept of ecology, but that land is to be loved and respected is an extension of ethics.

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.