In the long run our boasted control of nature is a delusion.

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.

Happiness is itself a kind of gratitude.

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

Nothing is too great or too good to be true. Do not believe that we can imagine things better than they are. In the long run, in the ultimate outlook, in the eye of the Creator, the possibilities of existence, the possibilities open to us, are beyond our imagination.

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.