The wilderness and the idea of wilderness is one of the permanent homes of the human spirit.

To have passed through life and never experienced solitude is to have never known oneself. To have never known oneself is to have never known anyone.

Electronic calculators can solve problems which the man who made them cannot solve; but no government-subsidized commission of engineers and physicists could create a worm.

Anxiety and distress, interrupted occasionally by pleasure, is the normal course of man's existence.

The wilderness and the idea of wilderness is one of the permanent homes of the human spirit.

The impulse to mar and to destroy is as ancient and almost as nearly universal as the impulse to create. The one is an easier way than the other of demonstrating power.

There is no conceivable human action which custom has not at one time justified and at another condemned.