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.

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

It is not a sentimental, but a grimly literal fact that unless we share this terrestrial globe with creatures other than ourselves, we shall not be able to live on it for long.

Custom has furnished the only basis which ethics have ever had.

Man is the only one in whom the instinct of life falters long enough to enable it to ask the question "Why?

Rhetoric takes no real account of the art in literature and morality takes no account of the art in life.

To be reminded that one is very much like other members of the animal kingdom is often funny...though...I do not too much mind being somewhat like a cat.