Man is the only amateur animal

Man is the only amateur animal; all others are professionals. They have no leisure and they do not desire it. When the cow has finished eating, she chews the cud; when she has finished chewing, she sleeps; when she has finished sleeping, she eats again. She is a machine for turning grass into calves and milk—in other words, for producing more cows. The lion cannot stop hunting, nor the beaver building dams, nor the bee making honey. When God made the beasts dumb He saved the world from infinite boredom, for it they could speak they would all of them all day talk nothing but shop.

C. S. Lewis, Rehabilitations