We console ourselves with the comfortable fallacy that a single museum piece will do, ignoring the clear dictum of history that a species must be saved in many places if it is to be saved at all.

It is in midwinter that I sometimes glean from my pines... a curious transfusion of courage.

I am glad I will not be young in a future without wilderness.

Wilderness, then, assumes unexpected importance as a laboratory for the study of land - health.

There is yet no ethic dealing with man's relation to land and to the animals and plants which grow upon it. Land, like Odysseus' slave-girls, is still property. The land-relation is still strictly economic, entailing privileges but not obligations.

The oldest task in human history: to live on a piece of land without spoiling it.

The worthiness of any cause is not measured by its clean record, but by its readiness to see the blots when they are pointed out, and to change its mind.