Perhaps we are wiser, less foolish and more far-seeing than we were two hundred years ago. But we are still imperfect in all these things, and since the turn of the century it has been remarked that neither wisdom nor virtue have increased as rapidly as the need for both.

In a cat's eye, all things belong to cats.

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

To those who study her, Nature reveals herself as extraordinarily fertile and ingenious in devising means, but she has no ends which the human mind has been able to discover or comprehend.

Nature, in her blind thirst for life has filled every possible cranny of the rotting earth with some sort of fantastic creature.

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

In history as it comes to be written, there is usually some Spirit of the Age which historians can define, but the shape of things is seldom so clear to those who live them. To most thoughtful men it has generally seemed that theirs was an Age of Confusion.