Animals are good to think with.

Imitate the ass in his love to his master.

Man is no man, but a wolf, to a stranger.

How like to us is that filthy beast the ape.

Be a good animal, true to your animal instincts.

An ape will be an ape, though clad in purple.

Man is the only animal for whom his own existence is a problem which he has to solve and from which he cannot escape.

There are some who, if a cat accidentally comes into the room, though they neither see it nor are told of it, will presently be in a sweat and ready to die away.

Man is a noble animal, splendid in ashes and pompous in the grave.

I do not mean to call an elephant a vulgar animal, but if you think about him carefully, you will find that his nonvulgarity consists in such gentleness as is possible to elephantine nature—not in his insensitive hide, nor in his clumsy foot, but in the way he will lift his foot if a child lies in his way; and in his sensitive trunk, and still more sensitive mind, and capability of pique on points of honor.

Happiness is a warm puppy.

It is remarkable that only small birds properly sing.

Of all the creatures that breathe and creep on the surface of the earth, none is more to be pitied than man.