Cats are rather delicate creatures and they are subject to a good many different ailments, but I have never heard of one who suffered from insomnia.

It is not ignorance but knowledge which is the mother of wonder.

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.

The snow itself is lonely or, if you prefer, self-sufficient. There is no other time when the whole world seems composed of one thing and one thing only.

If we do not permit the earth to produce beauty and joy, it will in the end not produce food, either.

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.

The rare moment is not the moment when there is something worth looking at, but the moment when we are capable of seeing.