Joseph Wood Krutch
Both the cockroach and the bird would get along very well without us, although the cockroach would miss us most.
Cats seem to go on the principle that it never does any harm to ask for what you want.
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.